⚡ Quick Verdict:
- 価格: Proton VPN starts at $2.99/mo vs OpenVPN at $7/mo (Growth plan)
- 最適な用途: Proton VPN for personal privacy and streaming, OpenVPN for 仕事 remote access and self-hosted setups
- 主な違い： Proton VPN is a full VPN service with its own server network. OpenVPN is a VPN protocol and platform you can self-host or use with third-party servers.
- Our pick: Proton VPN for most users — it works right out of the box with no manual configuration needed
Proton VPN and OpenVPN sound similar but work very differently.
One gives you a ready-to-use VPN service with servers worldwide.
The other is an open-source VPN protocol you can build on.
Picking the right one depends on what you need from a VPN.
概要
This ProtonVPN vs OpenVPN comparison covers pricing, features, and ease of use.
We also break down who each tool works best for.
Our sources include published specs, documentation, and G2 reviews.
By the end, you’ll know which VPN solution fits your needs.
ProtonVPNとは何ですか？
ProtonVPNは、Proton Mailの開発チームによって開発されたVPNサービスです。
Proton Technologies AG runs this VPN company from Switzerland under some of the world’s strongest privacy laws.
The Proton VPN app encrypts your internet connection and hides your IP address.
It has over 8,600 Proton VPN servers in 112 countries.
Most users choose it for privacy, streaming, and bypassing censorship.
Unlike other VPN providers, all Proton services including the VPN are open-source.
プロトンVPN
Swiss-based VPN with a strict no-logs policy verified by independent audits. Proton VPN offers a free plan with unlimited bandwidth and paid plans starting at $2.99/month.
ProtonVPNの料金
2026年のProton VPNの料金は以下の通りです。
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | 月額0.00ドル | 1台のデバイスで基本的なブラウジングを行う |
| プラス | 月額2.99ドル | Streaming and privacy users |
| 無制限 | 月額7.99ドル | Full Proton suite access |
Pricing verified May 2026.
無料トライアル: Proton VPN offers a permanent free plan. No credit card needed.
返金保証: 有料プランはすべて30日間の返金保証付きです。
📌 注記： The Proton Unlimited plan bundles Proton Mail, Proton Calendar, and Proton Drive with the VPN service. This gives you a full privacy suite for $7.99/month.
⚠️ 警告： The free plan limits you to one device and servers in three locations (US, Netherlands, Japan). You won’t get access to streaming or Secure Core servers on the free tier.
ProtonVPNの主な利点
Here’s what makes Proton VPN worth considering:
- スイスのプライバシー： Based in Switzerland, Proton VPN falls outside the 5-Eyes, 9-Eyes, and 14-Eyes surveillance alliances. Swiss law protects your data.
- 検証済みのログなしポリシー: Independent auditors have confirmed that Proton VPN does not store or share user activity data.
- 大規模なサーバーネットワーク: Over 8,600 servers across 112 countries give you fast connections and plenty of choices for your VPN server location.
- セキュアなコアアーキテクチャ： Routes your internet traffic through privacy-friendly countries before reaching the endpoint server. This adds an extra layer of protection.
- 内蔵広告ブロッカー： NetShield blocks ads, trackers, and malware at the DNS level. Your internet speeds stay fast while your browsing stays private.
- オープンソースアプリ： Every Proton VPN app is open-source. Anyone can inspect the code for 安全 欠陥。
- ストリーミングサポート: Proton VPN can unblock Netflix, BBC iPlayer, and Amazon Prime Video from anywhere. It has dedicated servers for streaming and tor servers for anonymous browsing on the tor network.
What Our Team Noticed
私たちの 作家 signed up for ProtonVPN and spent several days exploring the platform. Here’s what stood out:
ProtonVPNのメリットとデメリット
✅ メリット
- 帯域幅無制限で広告なしの無料プラン
- Swiss jurisdiction with verified no-logs policy
- Secure Core routes traffic through privacy-friendly countries
- Supports up to 10 devices on a single account
- Open-source apps with independent security audits
❌ デメリット
- Free plan limited to one device and three server locations
- Speeds can be slower than NordVPN or エクスプレスVPN 一部のサーバーでは
- No live chat support — only email-based customer support from Proton VPN support staff
- Paid plans are pricier than some budget VPN providers — it is an expensive VPN compared to サーフシャーク
OpenVPN とは何ですか?
OpenVPN is an open-source VPN protocol and software platform.
これは、お使いのデバイスとVPNサーバーの間に安全なトンネルを構築します。
Unlike Proton VPN, OpenVPN does not come with its own server network.
You either self-host your own VPN server or use a third-party VPN provider.
Businesses use OpenVPN Access Server for secure remote access to company networks.
オープンVPN
Open-source VPN protocol trusted by businesses worldwide. OpenVPN offers a free Community Edition and paid Access Server plans starting at $7/month per connection.
OpenVPNの価格設定
2026年におけるOpenVPNのコストは以下のとおりです。
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | $0 | Testing or small personal use |
| 成長 | 月額7ドル | 中小企業 リモートアクセス |
| 企業 | カスタム | 独自のニーズを持つ大規模組織 |
Pricing verified May 2026.
無料トライアル: The OpenVPN Community Edition is free forever. Access Server allows two free concurrent VPN connections.
返金保証: OpenVPN does not advertise a standard money-back guarantee.
📌 注記： The free plan supports up to two concurrent connections on Access Server. The OpenVPN Community Edition is entirely free and open-source for manual configuration.
⚠️ 警告： OpenVPN requires manual configuration for most setups. If you’re not comfortable with server management, the setup process can be time-consuming.
OpenVPNの主な利点
Here’s what makes OpenVPN worth considering:
- Open-Source Protocol: Anyone can inspect, 監査, or modify the OpenVPN software. This transparency builds trust in the VPN protocol’s security.
- 自己ホスト型コントロール： You can run your own OpenVPN server on your hardware. This means full control over your data traffic and encryption keys.
- クロスプラットフォームサポート: OpenVPN works on Windows, macOS, Linux, アンドロイド, and iOS. It also runs on routers and other operating systems like Solaris.
- Firewall Traversal: OpenVPN can pass through most firewalls and NAT gateways. This makes it useful in restricted network environments.
- TCPおよびUDPのサポート： You can choose between the user datagram protocol (UDP) for speed or the transmission control protocol (TCP) for reliability. OpenVPN TCP works best for browsing. OpenVPN UDP is better for streaming. Both tunneling protocols are available.
- エンタープライズ機能: Access Server includes secure remote access, zero trust enforcement, DNS security and content filtering, SaaS application protection, and site-to-site networking for businesses. OpenVPN Technologies builds both the OpenVPN software and the commercial Access Server product.
What Our Team Noticed
Our writer signed up for OpenVPN Access Server and tested the setup process. Here’s what stood out:
OpenVPNのメリットとデメリット
✅ メリット
- Fully open-source with community code review
- Self-hosted option gives complete control over VPN connections
- Supports both TCP and UDP VPN protocols
- ほぼすべてのオペレーティングシステムとデバイスで動作します
- Free Community Edition available for personal use
❌ デメリット
- No built-in server network — you need your own servers
- Manual configuration can be complex for beginners
- Slower than newer VPN protocols like WireGuard
- Mobile device experience is less polished than desktop
機能比較
Ready to dive into a detailed comparison of ProtonVPN vs OpenVPN? We’ll explore 9 key features to help you determine which VPN solution best suits your needs.
| 特徴 | プロトンVPN | オープンVPN |
|---|---|---|
| 開始価格 | 月額2.99ドル | 月額7ドル |
| 無料プラン | ✅ | ✅ |
| Own Server Network | ✅ 8,600+ servers | ❌ セルフホスティングのみ |
| キルスイッチ | ✅ | ❌ 手動設定 |
| スプリットトンネリング | ✅ | ✅ |
| Ad/Tracker Blocking | ✅ ネットシールド | ❌ |
| セルフホスティングオプション | ❌ | ✅ |
| ゼロトラストアクセス | ❌ | ✅ |
| 最適な用途 | 個人のプライバシー | 仕事 リモートアクセス |
1. サーバーネットワーク
プロトンVPN: Proton VPN runs over 8,600 VPN servers in 112 countries. You just open the Proton VPN app, pick a server location, and connect. No setup needed. The large server network means faster speeds and more options to bypass geo-restrictions.
オープンVPN: OpenVPN does not include any VPN servers. You need to set up your own OpenVPN server or connect through a VPN provider that supports the OpenVPN protocol. This gives you total control but requires technical knowledge to install OpenVPN and manage the server.
2. セキュリティと暗号化
プロトンVPN: Proton VPN uses AES-256 encryption with Perfect Forward Secrecy. It supports multiple VPN protocols including OpenVPN, IKEv2, and WireGuard. The Secure Core feature routes your internet traffic through privacy-friendly countries before reaching the endpoint server. All Proton VPN apps are open-source and independently audited.
オープンVPN: The open-source OpenVPN protocol supports AES-256 and other encryption algorithms through the OpenSSL library. You can configure different encryption ciphers and key lengths. OpenVPN uses secure sockets layer (SSL/TLS) with tls auth to create the secure tunnel and supports hash message authentication code (HMAC) for extra packet verification. The hmac firewall feature adds another layer of protection. It also includes Perfect Forward Secrecy and public key infrastructure for certificate management.
3. Privacy and Logging
プロトンVPN: Proton VPN follows a strict no-logs policy. Independent auditors have verified this claim. Proton Technologies AG publishes a transparency report showing how few legal requests it can fulfill. Swiss law prevents forced data sharing with foreign governments.
オープンVPN: OpenVPN itself is just a VPN protocol. The OpenVPN company does not collect or store user data. However, your privacy depends entirely on who runs the OpenVPN server you connect to. If you self-host, you control the ip logs and sensitive data. If you use other VPN providers or most VPN providers that support the protocol, their logging policy applies. OpenVPN is an openvpn compatible service that works with many VPN clients.
⚠️ 警告： When using OpenVPN with third-party servers, your data privacy depends on that provider’s policies. OpenVPN Technologies cannot guarantee your privacy on servers they don’t control.
4. 使いやすさ
プロトンVPN: Proton VPN is easy to use. Download the app, sign in, and tap connect. The interface works the same on Windows, マック, iOS, Android, Linux, and Android TV. There is no manual configuration needed. Even the Linux app has a graphical interface.
オープンVPN: OpenVPN Connect (the client software) is simple once configured. But the initial setup of an OpenVPN server requires command-line work. You need to create configuration files, manage certificates, and handle encryption keys. Access Server simplifies this with a web-based GUI, but it still takes more effort than a consumer VPN app.
5. ストリーミングとコンテンツへのアクセス
プロトンVPN: Proton VPN supports streaming from Netflix, BBC iPlayer, Amazon Prime Video, and other VPN services. Proton VPN servers are set up for unblocking access to geo-restricted content. The VPN Accelerator feature helps maintain fast internet speeds during streaming. This makes it a premium VPN for anyone who needs a secure VPN that also works for entertainment. Proton VPN is good at avoiding detection by streaming platforms.
オープンVPN: OpenVPN by itself does not unblock streaming services. It has no server network and no dedicated streaming servers. If you pair it with a VPN provider like ExpressVPN or プライベートインターネットアクセス, you can access streaming content through their servers using the OpenVPN protocol.
6. 速度とパフォーマンス
プロトンVPN: Proton VPN includes a VPN Accelerator that uses advanced networking techniques to boost connection speeds. It also supports the WireGuard protocol, which is faster than OpenVPN for most users. The large server network helps reduce congestion and maintain fast internet speeds.
オープンVPN: The OpenVPN protocol is reliable but slower than newer alternatives like WireGuard. UDP mode gives you faster speeds at the cost of reliability. TCP mode is more reliable but adds overhead. Speed also depends heavily on the quality of the VPN server you connect to and your internet connection.
7. プラットフォームサポート
プロトンVPN: The Proton VPN app runs on Windows, macOS, iOS, Android, Linux, Android TV, and Apple TV. Each platform gets a dedicated app with the same features. The Android app and Windows app share a consistent design.
オープンVPN: OpenVPN is compatible with virtually every operating system. This includes Windows, macOS, Linux, Android, iOS, and even Solaris and router firmware. The OpenVPN Connect client and OpenVPN client software is available on mobile devices, though the experience is less polished on phones than on desktop. You can install OpenVPN on nearly any device. OpenVPN servers can run on cloud instances or local hardware. VPN users who need an openvpn compatible service can also use VPN clients from other VPN protocols that support OpenVPN configurations.
8. Business and Enterprise Features
プロトンVPN: Proton VPN is designed mainly for individual users and small teams. It does not offer enterprise features like SAML authentication, zero trust access controls, or site-to-site VPN tunnels. Businesses with complex networking needs may find it limited.
オープンVPN: OpenVPN Access Server is built for businesses. It includes secure remote access, zero trust enforcement, DNS security and content filtering, SaaS application protection, and site-to-site networking. The platform scales from small teams to large organizations with custom enterprise pricing.
9. 価格とコスト
料金プランを並べて比較してみましょう。
| プラン | プロトンVPN | オープンVPN |
|---|---|---|
| 無料 | $0.00/month (1 device, 3 locations) | $0 (2 connections on Access Server) |
| 有給スターター | 月額2.99ドル（プラス） | 月額7ドル（成長プラン） |
| プレミアム | 月額7.99ドル（無制限） | カスタム（エンタープライズ） |
プロトンVPN: The Plus plan at $2.99/month gives you access to all 8,600+ servers, streaming support, and security features. The Unlimited plan at $7.99/month adds Proton Mail, Calendar, and Drive. The free version is the strongest free VPN available with unlimited bandwidth.
オープンVPN: The free tier includes two VPN connections on Access Server. The Growth plan costs $7/month per connection and suits 中小企業. Enterprise pricing is custom. The OpenVPN Community Edition is entirely free but needs manual configuration and your own server infrastructure.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| Personal privacy browsing | プロトンVPN | Ready-to-use with no setup |
| ビジネス向けリモートアクセス | オープンVPN | Built-in access controls |
| ストリーミングのブロック解除 | プロトンVPN | Built-in server network |
| セルフホスト型VPNの制御 | オープンVPN | サーバーの完全な所有権 |
| 制限なしの無料VPN | プロトンVPN | Unlimited bandwidth on free tier |
| 厳格なファイアウォールを回避する | オープンVPN | TCP mode passes most filters |
💰 あなたの予算
Proton VPN’s Plus plan costs $2.99/month, less than half of OpenVPN’s Growth plan at $7/month. If you want a free VPN, Proton VPN’s free tier offers unlimited bandwidth with no ads.
🔌 あなたの技術スタック
If you need to connect employees to private networks or SaaS applications, OpenVPN Access Server fits better. Proton VPN works best as a standalone app for individuals or small teams who just need a secure VPN connection.
🎓 あなたの経験レベル
Proton VPN is beginner-friendly. Download, sign in, connect. OpenVPN requires networking knowledge to set up and manage. If you’re a Linux user or sysadmin, you’ll feel at home with OpenVPN.
🆓 無料トライアルとデモ
Both tools have free options. Proton VPN’s free plan works on one mobile device with three server locations. OpenVPN’s free Access Server tier allows two concurrent connections. Try both before committing.
🛟 サポートオプション
Proton VPN offers email-based customer support with no live chat. OpenVPN provides chat, email, knowledge base, and forum support. For quick help, OpenVPN’s support staff responds faster through their help desk.
🔒 データプライバシーとセキュリティ
If privacy is your top priority, Proton VPN wins. Swiss jurisdiction, verified no-logs policy, and Secure Core servers protect your internet traffic. OpenVPN is safe as a protocol, but your privacy depends on who runs the VPN server.
切り替えガイド
既にこれらのツールのいずれかをご利用ですか？切り替える場合、どのような変更が予想されますか？
🔄 ProtonVPNからOpenVPNに切り替えますか？
✅ 得られるもの：
- Full control over your own VPN server and encryption keys
- Enterprise features like zero trust access and site-to-site networking
- Ability to create custom security configurations
❌ 失うもの：
- Access to 8,600+ ready-to-use VPN servers worldwide
- Built-in streaming unblocking and Secure Core servers
- One-click connection with no manual configuration
📋切り替え方法：
- Cancel your Proton VPN subscription before the next billing cycle
- Set up an OpenVPN Access Server on your own hardware or cloud instance
- Install the OpenVPN Connect client on your devices and import the configuration files
🔄 OpenVPNからProtonVPNに切り替えますか？
✅ 得られるもの：
- Instant access to 8,600+ servers in 112 countries with no server management
- Built-in NetShield ad blocker, kill switch, and DNS leak protection
- Proton suite integration with Proton Mail, Calendar, and Drive
❌ 失うもの：
- Full control over your VPN server infrastructure
- Custom security protocol configuration and encryption cipher choices
- Enterprise features like zero trust access controls
📋切り替え方法：
- Export any saved OpenVPN configurations you want to keep
- Sign up for a ProtonVPN account and choose a plan
- Download the Proton VPN app on your devices and connect
What Our Review Didn’t Cover
This comparison focused on individual users and small teams. We didn’t test large-scale enterprise deployments or evaluate how either tool performs with hundreds of concurrent VPN connections. OpenVPN’s IoT communication features and Proton VPN’s Tor over VPN for high-risk scenarios weren’t part of this review. If you work in a heavily regulated industry, your needs may differ from what we’ve covered.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | プロトンVPN |
| 🔒 プライバシー | プロトンVPN |
| 🚀 使いやすさ | プロトンVPN |
| 📺 ストリーミング配信 | プロトンVPN |
| 🔧 カスタマイズ | オープンVPN |
| 🏢 Business Features | オープンVPN |
| ⚡ スピード | プロトンVPN |
| 🏆総合優勝 | プロトンVPN |
🏆 優勝：ProtonVPN
ProtonVPNは7つのカテゴリーのうち5つで優勝しました。
最適な用途: Personal privacy, streaming, and everyday VPN use
ProtonVPN and OpenVPN serve very different purposes. ProtonVPN is a complete VPN service with its own server network, apps, and privacy protections built in. OpenVPN is a VPN protocol and platform that gives you full control but requires technical setup.
OpenVPN is excellent for businesses that need secure remote access, self-hosted VPN servers, and zero trust access controls. If your team manages its own infrastructure, OpenVPN Access Server is a strong fit.
However, if you need a VPN that works right away with strong privacy, streaming support, and an easy interface, ProtonVPN is the better choice.
ProtonVPNの比較をもっと見る
ProtonVPNが他の競合他社と比べてどうなのか、以下に示します。
ProtonVPN vs NordVPN
ProtonVPNが優れている点： Swiss privacy jurisdiction, open-source apps, free plan with unlimited bandwidth
NordVPNが優れている点： Faster raw connection speeds, larger server count, live chat support available
ProtonVPN vs ExpressVPN
ProtonVPNが優れている点： Lower pricing with free tier available, verified no-logs policy under Swiss law, Secure Core multi-hop routing
ExpressVPNが優れている点： Faster speeds on distant servers, broader streaming platform support, easier router setup
ProtonVPN vs SurfsharkVPN
ProtonVPNが優れている点： Stronger privacy credentials with Swiss jurisdiction, independently audited no-logs policy, Tor over VPN support
SurfsharkVPNが優れている点： Unlimited simultaneous device connections, lower long-term pricing, GPS spoofing on Android
ProtonVPN vs CyberGhost
ProtonVPNが優れている点： Open-source transparency, free VPN plan, Swiss privacy protections
CyberGhostが勝利した点： More dedicated streaming servers, longer 45-day money-back guarantee, lower entry price on multi-year plans
OpenVPNの比較についてさらに詳しく
OpenVPNが他の競合製品と比べてどうなのか、以下に示します。
OpenVPNとNordVPNの比較
OpenVPNが優れている点： Full server control with self-hosting, open-source code transparency, enterprise access controls
NordVPNが優れている点： Ready-to-use app with no setup, massive server network, faster WireGuard-based connections
OpenVPNとExpressVPNの比較
OpenVPNが優れている点： Self-hosted deployments, free Community Edition, custom encryption settings
ExpressVPNが優れている点： One-click connection on all devices, streaming support built in, Lightway protocol for faster speeds
OpenVPNとPrivate Internet Accessの比較
OpenVPNが優れている点： Full server ownership, built-in zero trust features, configurable encryption ciphers
Private Internet Accessが優れている点： Consumer-friendly pricing, built-in server network, port forwarding without server setup
よくある質問
Proton VPNは安全ですか？
Yes, Proton VPN is safe. It uses AES-256 encryption and has a strict no logs policy verified by independent audits. Proton VPN passed its third-party security audit. The VPN company is based in Switzerland, where the world’s strongest privacy laws protect your data from other VPN services and government requests. A dns leak test confirms that Proton VPN does not expose your IP addresses or dns leaks during use. Unlike most VPN protocols used by other vpn companies, Proton VPN does not share data with your internet service provider. Is Proton VPN good? Yes — it ranks among the top privacy-focused VPN providers.
OpenVPNは無料で利用できますか？
The OpenVPN Community Edition is completely free as an open source VPN protocol. Access Server offers a free tier with two concurrent OpenVPN connections. Paid plans start at $7/month for additional connections and business features. The OpenVPN GUI makes it easier to manage OpenVPN TCP and OpenVPN UDP settings on desktop. Most VPN providers also support the OpenVPN protocol as a tunneling protocol option.
Proton VPNは本当に無料ですか？
Yes, the free version has no ads and provides unlimited bandwidth. It limits you to one device and three server locations. Compared to other free VPNs, this is a strong offer. Proton VPN’s website lists full details. No credit card is needed to sign up for the free plan. Other free vpns often include ads or sell sensitive data.
OpenVPNはNordVPNより優れているのか？
They serve different purposes. OpenVPN is one of the safest VPN protocols and a self-hosted platform for businesses. NordVPN is a consumer VPN service that uses the OpenVPN protocol as one of its tunneling protocols. For personal use, NordVPN is easier. For business remote access creating VPN tunnels to private networks, OpenVPN gives you more control over encryption protocols and secure connections.
Proton VPNは検出される可能性がありますか？
Some networks can detect standard VPN traffic. The Stealth protocol makes your encrypted tunnel look like regular internet traffic. This helps bypass censorship in restrictive countries. Proton VPN easy to use even in locations blocking access to virtual private networks. Proton VPN offers the Stealth mode on all Proton apps including the Android app. Does Proton VPN work in China? Many users report it does with the Stealth option enabled.
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