The best free SSH clients, honestly
"Free" means two different things here: fully free open-source apps (Termux, ConnectBot, PuTTY) and free tiers of commercial apps (Termius Starter, Blink Classic, TermAI free). The right pick depends on your platform and how much you want for $0. Quick version: on Android, Termux or ConnectBot are genuinely free and capable; on desktop, PuTTY is the classic; and if you want a modern mobile client with AI help and SFTP for free, TermAI's free tier is the most generous of the commercial free tiers. Details below.
The options at a glance
| Client | Platform | Free model | Best free for |
|---|---|---|---|
| Termux | Android | Fully free, open source | A real Linux environment on the phone |
| ConnectBot | Android | Fully free, open source | Simple, no-frills SSH |
| PuTTY | Windows/Linux | Fully free, open source | The desktop classic |
| Termius (Starter) | All | Free tier (sync/teams paid) | Cross-device basics |
| Blink Classic | iOS/iPadOS | Free version | Power users on iPad |
| TermAI (free) | iOS/Android | Free tier (5 AI/day) | Modern mobile client + AI + SFTP |
Free terms change — verify on each store/site. Accurate as of mid-2026.
Best free on Android
Termux is a fully free, open-source Linux environment — you get a real shell with apt packages, and SSH is just one of the things it does. It's powerful but it's not a managed SSH client (no saved-host GUI). ConnectBot is the opposite: a simple, free, open-source SSH client that's been around forever — great if you just want to connect and type. Both cost nothing and have no upsells.
Best free on desktop
PuTTY remains the free Windows classic — minimal, reliable, open source. On macOS and Linux the built-in ssh command is already free and excellent. (Note: there's no official PuTTY mobile app — avoid fake APKs.)
Best free modern mobile client
The free tiers of commercial apps differ a lot in what they actually give you. Termius Starter covers the basics but puts sync behind Pro; Blink Classic is free but iOS-only and power-user-focused. TermAI's free tier is unusually generous for a modern client: real SSH and SFTP, built-in Tailscale, and 5 AI requests/day — so even without paying you get the headline feature (describe a task, get a command to review) a handful of times daily, plus the ability to reach private servers.
What to watch for in "free"
- Free tier vs free trial: a 1-2 week trial isn't free — check whether the free state is permanent.
- What's gated: sync, SFTP, port forwarding, and AI are common paywall lines. Decide which you actually need.
- Open source ≠ maintained: some free clients are abandoned. Prefer actively updated ones (security matters for SSH).
- Fake "free" apps: especially "PuTTY for iPhone/Android" — there's no official one; use a maintained client instead.
FAQ
What is the best free SSH client?
On Android, Termux (full Linux) or ConnectBot (simple SSH) are fully free. On desktop, PuTTY or the built-in ssh command. For a modern mobile client with AI help and SFTP for free, TermAI's free tier is the most generous of the commercial free tiers.
Is Termius free?
Termius has a free Starter tier, but cloud sync and advanced features require Pro (~$9.99/mo annually). For a cheaper paid tier with AI command generation, TermAI Pro is $2.99/mo.
Is there a free SSH client for iPhone?
Yes — Blink Classic is free (iOS), and TermAI's free tier includes real SSH/SFTP plus 5 AI requests/day. Termius Starter is also free with sync gated behind Pro.
Are free open-source SSH clients safe?
Generally yes if actively maintained — open source means the code is auditable. Avoid abandoned apps and fake clones, especially anything calling itself "PuTTY" on mobile.
Quick Facts
- Fully free (open source): Termux & ConnectBot (Android), PuTTY (Windows), built-in
ssh(Mac/Linux) - Free tiers: Termius Starter, Blink Classic, TermAI free
- Most generous mobile free tier: TermAI — real SSH/SFTP, built-in Tailscale, 5 AI requests/day
- Watch for: trial-not-tier, gated sync/SFTP, abandoned apps, fake "PuTTY mobile"
Free on iOS and Android. 5 AI requests/day on the free tier, plus unlimited SSH/SFTP and built-in Tailscale.