⚡ 簡単な評価:
- 価格: OpenVPN has a $0 Free plan vs StrongVPN from $3.97/month on its Annual Plan.
- 最適な用途: OpenVPN for IT teams and self-hosters, StrongVPN for everyday privacy and streaming.
- 主な違い： OpenVPN is a protocol and software you run. StrongVPN is a service with ready-made servers.
- 私たちのおすすめ： OpenVPN for most tech-savvy users. It’s free, open source, and fully under your control.
OpenVPN and StrongVPN show up in the same searches.
But they aren’t the same kind of product.
OpenVPN is a free, open-source VPN protocol and software suite.
StrongVPN is a paid VPN service with its own servers.
Here’s the twist: StrongVPN uses the OpenVPN protocol inside its apps.
だから本当の 質問 is simple. Do you build your own tunnel or rent one?
概要
This OpenVPN vs StrongVPN comparison covers pricing, security, speed, and ease of use.
We reviewed documentation, pricing pages, and G2 reviews for both tools.
私たちのライター陣は、それぞれの動物と実際に触れ合う時間も設けました。
それらのメモは、以下の「チームが気づいたこと」のセクションに記載されています。
By the end, you’ll know which one fits your setup.
OpenVPN とは何ですか?
OpenVPN is an open source VPN protocol first released in 2001.
It builds a secure tunnel for data traffic between a VPN client and server.
Think of it as a custom security protocol built on SSL/TLS.
SSL/TLS is the secure sockets layer family of encryption.
It’s a tool for creating VPN tunnels, not a ready-made VPN service.
It sets up virtual private networks with secure connections for sensitive data.
The OpenVPN company also sells 仕事 tools like OpenVPN Access Server.
The firm was once known as OpenVPN Technologies.
Here’s a quick video walkthrough of how OpenVPN works.
オープンVPN
Free, open-source software for private VPN tunnels. Run it on your own server. Paid plans add cloud management for teams.
OpenVPNの価格設定
Here’s what OpenVPN costs in 2026. The core software is free.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | $0 | Testing or small personal setups |
| 成長 | 月額7ドル | Small teams needing managed access |
| 企業 | カスタム | Large companies with strict security rules |
Pricing verified September 2026.
無料トライアル: The Free plan lets you test OpenVPN at no cost. No time limit applies.
返金保証: OpenVPN doesn’t advertise one. Start on the Free plan before you upgrade.
📌 注記： OpenVPN Community Edition is the open-source build, and it’s free. You pay only for managed business tools or your own server hosting.
⚠️ 警告： OpenVPN alone gives you no VPN servers. You must run an OpenVPN server or pay for an OpenVPN compatible service.
OpenVPNの主な利点
OpenVPNを検討する価値がある理由は以下のとおりです。
- オープンソースコード： Anyone can inspect the code for flaws. A global developer community reviews and patches it.
- TCP or UDP Choice: OpenVPN TCP delivers every packet in order, so it’s reliable but slower. OpenVPN UDP is faster but skips delivery checks.
- Flexible Encryption: It supports encryption algorithms like AES and Blowfish via the OpenSSL library. You choose the encryption ciphers and key lengths.
- Firewall Friendly: It slips through firewalls and NAT gateways with ease. That helps on ホテル, school, and office networks.
- 完全な前方秘匿性： Fresh encryption keys protect each session. One leaked key won’t expose all your past data.
- Runs Almost Everywhere: It supports Windows, macOS, Linux, Android, and iOS. It even runs on Tomato routers and Solaris.
- あなたに合わせて拡張可能： It handles one remote user or full office links. It also carries IPv4 and IPv6 traffic.
私たちのチームが気づいたこと
私たちの 作家 signed up for OpenVPN and worked through the setup on a Windows laptop. Here’s what stood out:
OpenVPNのメリットとデメリット
✅ メリット
- Community Edition is free and open source
- Choice of TCP or UDP for reliability or speed
- Strong encryption with configurable ciphers
- Handles firewalls and NAT gateways well
- Runs on nearly every operating system
❌ デメリット
- 手動設定は初心者には難しい
- WireGuardのような新しいプロトコルよりも遅い
- No built-in server locations for streaming
- Less smooth on mobile デバイス than on desktop
StrongVPNとは何ですか？
StrongVPN is a US-based VPN company running since 2005.
It bundles apps, servers, and support into one subscription.
The network has over 950 servers in 30 countries.
No server uses a virtual location, so each one sits where it claims.
It supports WireGuard, OpenVPN, IKEv2, SSTP, and L2TP.
Reviewers call it reliable but basic next to bigger names.
This short video shows the app in action.
強力なVPN
Plug-and-play VPN with 12 device slots. Includes 250GB of SugarSync storage. Backed by a 30-day refund window.
StrongVPNの料金プラン
Here’s what StrongVPN costs in 2026. There are just two plans.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 年間計画 | 月額3.97ドル | Long-term users who want the lowest rate |
| 月額プラン | 月額11.99ドル | Short trips or testing before committing |
Pricing verified September 2026.
無料トライアル: No. StrongVPN has no free trial or free version.
返金保証: Yes. Subscriptions come with a 30-day money back guarantee.
📌 注記： Every StrongVPN subscription includes 250GB of SugarSync cloud storage. Payment options include credit cards, PayPal, and Alipay.
⚠️ Price check: Some review sites list the monthly plan at $10.99. They show the annual plan at $69.99. That annual rate reportedly renews at $89.99 after year one. Confirm the final price at checkout.
StrongVPNの主なメリット
Core StrongVPN features cover privacy, streaming, and storage. Here are the highlights:
- 物理サーバーのみ： StrongVPN’s servers all sit in their real countries. You always know where your traffic exits.
- 同時接続数：12 Cover phones, laptops, and a TV on one account. That’s enough for most families.
- 無料クラウドストレージ： Each plan adds 250GB of SugarSync storage. Few other VPNs bundle backup space.
- Kill Switch and AES-256: The kill switch blocks internet access if the VPN drops. AES-256 encryption guards everything in between.
- ストリーミング向けスマートDNS： SmartDNS unblocks geo-restricted content without slowing you down. It works on devices that can’t run VPN apps.
- Real Human Support: Help comes via live chat, phone, and email. Phone support is rare in the VPN industry.
- P2P on Every Server: Torrenting is allowed on all servers. You don’t need to hunt for special locations.
私たちのチームが気づいたこと
Our writer subscribed to StrongVPN and used its apps for everyday browsing. Here’s what stood out:
StrongVPNのメリットとデメリット
✅ メリット
- Physical servers only, with no virtual locations
- アカウントごとに同時接続数12
- 250GB of free cloud storage included
- Live chat, phone, and email support
- WireGuardおよびOpenVPNプロトコルをサポートします。
❌ デメリット
- 米国に拠点を置くファイブ・アイズ加盟国
- No-logs policy has never been independently audited
- Small server network compared to larger rivals
- No free trial or free version
機能比較
OpenVPN and StrongVPN tackle privacy from opposite ends. Below, we compare nine key features plus pricing.
| 特徴 | オープンVPN | 強力なVPN |
|---|---|---|
| 開始価格 | 0ドル（無料プラン） | 月額3.97ドル |
| 無料プラン | ✅ | ❌ |
| Ready-Made Server Locations | ❌ | ✅ 30か国で950人以上 |
| OpenVPN Protocol | ✅ | ✅ |
| WireGuardプロトコル | ❌ | ✅ |
| サイト間ネットワーク | ✅ | ❌ |
| DNS Filtering / SmartDNS | ✅ (business plans) | ✅ |
| Bundled Cloud Storage | ❌ | ✅ 250GB |
| 電話サポート | ❌ | ✅ |
| 最適な用途 | IT teams and self-hosters | Everyday privacy and streaming |
1. 安全なリモートアクセス
オープンVPN: OpenVPN Access Server lets staff reach company files from home. Each VPN connection is checked through a public key infrastructure. That’s why IT teams pick it for リモートアクセス.
強力なVPN: StrongVPN focuses on personal online security, not office networks. It hides your IP addresses from websites and your internet service provider. It can’t connect you to private networks at work.
2. Protocols & Speed
オープンVPN: OpenVPN is one protocol with two modes. OpenVPN connections run over transmission control protocol for reliability or user datagram protocol for speed. The UDP protocol is usually the better pick for streaming and calls. Like other tunneling protocols, it trades a little speed for safety.
強力なVPN: StrongVPN defaults to WireGuard on most apps. It also offers the open source OpenVPN protocol. Published tests show a 5-7% speed loss on nearby servers. Other reviews report a 20% average drop.
One review measured download and upload speeds at 31% and 13% against base. Streaming showed minimal buffering in tests. Ping suits casual gaming, but latency runs higher than top rivals for competitive play.
⚠️ 警告： Speed depends on distance. Always connect to the server closest to your real location. If speeds dip, try the next closest server.
3. Encryption & Authentication
オープンVPN: OpenVPN supports many encryption protocols through the OpenSSL library. It verifies both sides with certificates, user credentials, and a hash message authentication code. The tls auth option adds an HMAC firewall that drops unsigned packets 早い.
強力なVPN: StrongVPN uses AES-256 across its apps. It handles keys and certificates for you, with zero setup. You get less control but fewer ways to make mistakes.
This is where OpenVPN offers better security than most VPN protocols. Compared to other VPN protocols like PPTP, it’s far harder to crack. It regularly appears on lists of the safest VPN protocols.
4. プライバシーとログ記録
オープンVPN: With the self-hosted Community Edition, you run the server. You decide what, if anything, your OpenVPN servers log. No third party sees your browsing activity.
強力なVPN: StrongVPN claims a strict no logging policy. It says it doesn’t store browsing history, timestamps, or IP addresses. The only personal information it keeps is your email and payment information for billing.
It also says it never sells user data to third parties.
⚠️ 警告： StrongVPN is based in the US, part of the Five Eyes alliance. Its strict no logging policies have never been independently audited.
5. DNS Security
オープンVPN: OpenVPN’s business plans add DNS security and content filtering. They block harmful domains before a page loads. Community Edition users set DNS rules by hand.
強力なVPN: StrongDNS sends lookups through StrongVPN’s own resolvers. That acts as built-in DNS leak protection for your web traffic. We strongly advise running your own leak tests after setup.
6. Streaming & Censorship
オープンVPN: OpenVPN has no streaming servers of its own. Your server has one IP, so unblocking other regions is limited. It does beat restrictive firewalls, which helps on locked-down networks.
強力なVPN: StrongVPN can reach major streaming platforms from abroad. SmartDNS helps on devices like Amazon Fire TV. Services like BBC iPlayer change their blocks often, so results vary.
It also helps you reach news and social sites in censored regions.
7. Servers & Network
オープンVPN: OpenVPN lets you build your own network from scratch. Site-to-site links join whole offices through VPN tunnels. Plugins and scripts extend it for custom setups.
強力なVPN: StrongVPN runs 950+ physical servers in 30 countries. Other VPNs offer more servers and more server locations. P2P transfers are allowed everywhere, and plans don’t list caps on bandwidth usage.
8. アプリとデバイスのサポート
オープンVPN: The OpenVPN client runs on most operating systems. Beginners use OpenVPN Connect, while Windows users often prefer the OpenVPN GUI. You install OpenVPN, then import a .ovpn config file.
Most VPN clients support it, and the client software is free. The OpenVPN software also secures IoT devices like cameras and sensors. You don’t need your own server, either. ExpressVPN, Surfshark, CyberGhost, and プライベートインターネットアクセス ship OpenVPN preconfigured.
強力なVPN: StrongVPN offers native apps for iOS, Windows, macOS, Android, and routers. The Android app lives on the Google Play Store and runs on Chrome OS. Manual setup guides cover other devices StrongVPN has no app for.
There are no browser extensions. Reviews say not all apps offer split tunneling beyond Android devices. Check the settings menu on yours. Turn on the kill switch in the Windows app and Android apps.
9. Cloud & SaaS Protection
オープンVPN: OpenVPN’s business tiers secure access to SaaS applications. You can limit which staff reach which cloud app. That’s zero trust access in practice.
SaaS Protection adds a clear view of who uses each app.
強力なVPN: StrongVPN takes a consumer angle here instead. Each plan includes 250GB of SugarSync cloud storage. That free cloud storage is handy for backing up photos and files.
10. 価格設定とコスト
料金プランを並べて比較してみましょう。
| プラン | オープンVPN | 強力なVPN |
|---|---|---|
| 無料 | $0 | ❌ |
| 成長 | 月額7ドル | — |
| 年間計画 | — | 月額3.97ドル |
| 月額プラン | — | 月額11.99ドル |
| 企業 | カスタム | — |
オープンVPN: OpenVPN is free if you run your own server. Growth suits teams that want cloud-managed access. Self-hosters still pay for hosting.
強力なVPN: The Annual Plan is the cheapest way in. The Monthly Plan costs about three times more per month. The refund window lowers the risk of trying it.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| Zero budget | オープンVPN | 無料コミュニティ版 |
| Streaming abroad | 強力なVPN | Real servers in 30 countries |
| Remote access for staff | オープンVPN | Access Server and site-to-site links |
| Many family devices | 強力なVPN | 12 connections on one account |
| Full control of logs | オープンVPN | You run the server |
| 初心者向けのセットアップ | 強力なVPN | One-tap apps |
💰 あなたの予算
OpenVPN costs nothing if you host it yourself. StrongVPN is paid only, with no free tier.
🔌 あなたの技術スタック
OpenVPN fits Linux servers, routers, and company networks. StrongVPN fits phones, laptops, and streaming boxes.
🔒 Your Privacy Priorities
If you don’t want to trust any VPN company, host OpenVPN yourself. StrongVPN asks you to trust an unaudited US provider.
🎓 あなたの経験レベル
New VPN users should start with StrongVPN’s mobile apps. If manual configuration feels fun, OpenVPN gives you more.
🆓 無料トライアルとデモ
OpenVPN’s Free plan is a no-risk test. StrongVPN has no trial, so lean on its 30-day refund window.
🛟 サポートオプション
StrongVPN offers live chat, phone, and email. OpenVPN leans on documentation and forums, with ticket help on business plans.
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？
🔄 Switching from OpenVPN to StrongVPN?
✅ 得られるもの：
- 950+ ready-made servers in 30 countries
- One-tap apps with a kill switch
- 250GB cloud storage and phone support
❌ 失うもの：
- Full control over your servers and logs
- Free self-hosted use
- Site-to-site links and access to private networks
📋切り替え方法：
- List the devices that use your .ovpn profiles.
- Buy a StrongVPN plan and install the apps.
- Pick WireGuard or OpenVPN in the app and connect.
🔄 Switching from StrongVPN to OpenVPN?
✅ 得られるもの：
- Open-source code you can inspect
- No subscription with Community Edition
- Business tools like zero trust and DNS filtering
❌ 失うもの：
- Ready-made server locations
- SmartDNS and streaming support
- Live chat and phone help
📋切り替え方法：
- Cancel within 30 days if you want a refund.
- Set up an OpenVPN server or Access Server.
- Install OpenVPN Connect and import your profile.
私たちのレビューで取り上げられなかったこと
This comparison focused on individual users and small teams. We didn’t test large Access Server rollouts, Enterprise pricing, or router installs. Speed figures come from third-party tests, and your own internet connection will change results. Our notes reflect the September 2026 versions of both products. For more detail, read our full StrongVPN review.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | オープンVPN |
| 🔐 Security & Transparency | オープンVPN |
| 🛠️ Flexibility & Control | オープンVPN |
| 🏢 ビジネスでの利用 | オープンVPN |
| 👶 使いやすさ | 強力なVPN |
| 🌍 サーバーネットワーク | 強力なVPN |
| 📺 ストリーミング配信 | 強力なVPN |
| 🏆総合優勝 | オープンVPN |
🏆 WINNER: OPENVPN
OpenVPN wins 4 out of 7 categories.
最適な用途: IT teams, self-hosters, privacy purists
OpenVPN and StrongVPN solve different problems. OpenVPN is an open source VPN protocol and software you control. StrongVPN rents you servers and apps.
StrongVPN is a good VPN for people who just want to stay safe online. It protects your online activity on public Wi-Fi from other users. Its security features cover the basics well. With 12 device slots and phone support, it’s a strong VPN pick for busy households.
Still, OpenVPN wins on cost, transparency, and flexibility. Is OpenVPN safe? Yes, and you can read the code yourself. In 2026, it remains the protocol most VPN providers build on.
OpenVPNの比較についてさらに詳しく
Here’s how OpenVPN stacks up against popular VPN services:
OpenVPNが優れている点： free self-hosting, fully auditable code, site-to-site office links
ノードVPN 勝利したタイトル： a huge ready-made server list, audited no-logs claims, one-tap streaming apps
OpenVPNが優れている点： no subscription needed, custom cipher choices, remote access for staff
エクスプレスVPN 勝利したタイトル： polished beginner apps, its own Lightway protocol, broad streaming support
OpenVPN vs プロトンVPN
OpenVPNが優れている点： runs on hardware you own, zero trust access tools, DNS content filtering
ProtonVPNが優れている点： a free plan with real servers, Swiss privacy law, Secure Core routing
OpenVPN vs サーフシャーク
OpenVPNが優れている点： no third-party trust required, IoT and SaaS protection, an Enterprise tier
Surfsharkが勝利した点： unlimited device connections, a built-in ad blocker, simple setup
StrongVPNの比較をもっと見る
StrongVPN is dependable but basic. Here’s how it fares against the best VPNs in its price range:
StrongVPNが優れている点： phone support, bundled SugarSync storage, physical-only servers
NordVPNが優れている点： independent audits, a far larger network, a Panama base outside Five Eyes
StrongVPNが優れている点： a lower entry price, 12 device slots, free backup space
ExpressVPNが優れている点： audited apps and servers, more server countries, a non-US jurisdiction
StrongVPNとPrivate Internet Accessの比較
StrongVPNが優れている点： human phone support, cloud storage, no virtual servers
Private Internet Accessが優れている点： open-source apps, unlimited devices, a no-logs claim tested in court
StrongVPNが優れている点： only physical servers, simple two-plan pricing, phone help
ピュアVPN 勝利したタイトル： cheaper long-term plans, audited no-logs claims, a wider server spread
よくある質問
OpenVPN は無料ですか?
Yes. The Community Edition is free and open source. Business tools cost extra, with Growth at $7/month and custom Enterprise pricing. Self-hosters may also pay for a server.
OpenVPNは安全に使用できますか？
Yes. It uses SSL/TLS, strong encryption, and certificate checks. Its open code gets constant community review. Weak manual settings, like outdated ciphers, are the main risk.
VPNとOpenVPNの違いは何ですか？
A VPN is a service or network that hides your traffic. OpenVPN is one protocol that builds the tunnel. Many providers, including StrongVPN, use it inside their apps.
StrongVPNとは何ですか？
It’s a US-based VPN service running since 2005. It has 950+ physical servers in 30 countries and a kill switch. Plans include 250GB of SugarSync storage.
StrongVPNには何台のデバイスを接続できますか？
You can connect up to 12 devices at once on one account. Router setup guides let one router protect even more devices at home.
English 
Spanish 
Chinese 
German 
French 
Arabic 
Russian 
Portuguese 
Japanese 
Korean 
Italian 
Turkish 
Dutch 
Polish 
Indonesian 
Thai 
Vietnamese 