sandbox — independent software & tools

10 independent sandbox listings the big search engines bury.

• AppCloner

  github · Free · by EazyHood

  Clone Windows apps with independent sessions - run the same app with multiple accounts at once. Free to use. (c) EazyHood.

• wryayer

  github · Free · by KsmBl

  Isolated per-app package management for Arch, Debian & Fedora. Per-app filesystem trees run in bubblewrap sandboxes without complicated container systems and seperate partitions

• capka

  github · Free · by LyoSU

  Capka AI — An open-source, self-hosted sandbox for AI agents. A community-driven alternative to Claude's Cowork

• BlocksBeyondTheStars

  github · Free · by marceld23

  A block-based 3D space crafting game: explore procedurally generated planets across many star systems, mine and craft, tame creatures, build ships, bases and your own space stations — solo or with friends. Open-source .NET server + Unity client, self-hostable.

• covenant

  github · Free · by open-covenant

  A capability-based operating layer for long-running autonomous software engineering agents. Rust daemon, signed capabilities, append-only audit, drift-aware memory, fail-closed sandbox dispatch, commit-scoped provenance.

• context-mode

  npm · Free · by mksglu

  MCP plugin that saves 98% of your context window. Works with Claude Code, Gemini CLI, VS Code Copilot, OpenCode, and Codex CLI. Sandboxed code execution, FTS5 knowledge base, and intent-driven search.

• e2b

  npm · Free · by GitHub Actions

  E2B SDK that give agents cloud environments

• brileta

  github · Free · by mayz

  Game engine and roguelike sandbox in Python and C.

• vibescript

  github · Free · by mgomes

  An embeddable Ruby-like language for building safe, AI-friendly applications in Go

• workcell

  github · Free · by omkhar

  Bounded local runtime and policy boundary for coding agents