Free tier only
Free Alternatives to shim-cli (2026)
shim-cli has a free tier, but if it does not fit, Here are 6 Security & Privacy tools you can start using for free, ranked by how closely they match shim-cli, with what each charges once you outgrow the free plan.
Closest free matches
Ranked by shared use cases, audience and stack with shim-cli. Every tool here lists a free plan.
OpenCode is an MIT-licensed AI coding agent that runs in the terminal, as a desktop app or in an IDE, and works with 75+ model providers, local models and existing Copilot or ChatGPT subscriptions.
Harness is Autonomous' open-source (MIT) command center for coding agents: run Claude Code, Codex, Cursor, OpenCode and more side by side across your machines, with end-to-end encrypted remote terminals.
Ultracite is an open-source, zero-configuration preset for Biome, Oxlint and ESLint. It lints and formats JavaScript and TypeScript code and checks each edit an AI coding agent makes against a strict, shared set of rules.
NitroStack is a platform for building, testing and hosting Model Context Protocol (MCP) servers. It combines an open-source TypeScript SDK, a desktop IDE called NitroStudio and a serverless host called NitroCloud.
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Other free Security & Privacy tools
Popular free tools in the same category. Less closely matched to shim-cli, but worth a look.
| Tool | Free plan | Paid from |
|---|---|---|
| Free Online Secret Message Encoder/Decoder Encrypt and decrypt secret messages and files with AES-256 encryption in your browser. | Free online tool | — |
| SAM - Chrome Web Store A powerful open-source adblocker featuring fingerprint protection and YouTube ad skipping. | Free | — |
Free alternatives to shim-cli: FAQ
Quick answers to common questions
Is shim-cli free?
Yes, shim-cli offers a free tier. The tools below are alternatives that are also free to start.
What is the best free alternative to shim-cli?
OpenCode is the closest free match by shared use cases, audience and stack, with paid plans from $10. Harness by Autonomous, Ultracite and NitroStack are the next closest.
Which free Security & Privacy alternatives have paid upgrades?
OpenCode (from $10) and Harness by Autonomous (from $149) list paid plans above their free tier. 4 of the tools listed publish no paid price at all.
How were these free alternatives to shim-cli chosen?
Tools are ranked by similarity to shim-cli (shared use cases, target audience, tech stack and pricing model) and filtered to those whose listing shows a free tier, freemium plan or open-source edition. Where fewer than 2 close matches exist, popular free Security & Privacy tools fill the list and are labelled as such.
Building a free Security & Privacy tool?
List it free. Tools with a free tier appear on pages like this one.