Modal Sandboxes alternatives

Modal Labs ships a serverless container platform with first-class GPU support; Sandboxes feature (2024) adds ephemeral, AI-agent-friendly compute sandboxes. Founded 2021 by Erik Bernhardsson (ex-Spotify ML, author of Luigi + Annoy). Full Modal Sandboxes record →

  1. 1 e2b AI sandbox & runtime environments

    also in AI sandbox & runtime environments · same memory unit (file) · also open source · also self-hostable · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 15k released 2026-10-26 Apache-2.0 Compare with Modal Sandboxes →

  2. 2 Coder.com AI sandbox & runtime environments

    also in AI sandbox & runtime environments · same memory unit (file) · also open source · also self-hostable · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 14k released 2026-10-06 AGPL-3.0 (Community); proprietary Premium / AI… Compare with Modal Sandboxes →

  3. 3 Daytona AI sandbox & runtime environments

    also in AI sandbox & runtime environments · same memory unit (file) · also open source · also self-hostable · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 15 released 2026-10-23 Apache-2.0 (SDKs in daytona/clients; CLI under… Compare with Modal Sandboxes →

  4. 4 Browserless.io AI sandbox & runtime environments

    also in AI sandbox & runtime environments · same memory unit (file) · also self-hostable · also offered managed

    OSS — Self-host ✓ Managed ✓ MCP ✓ ★ 14k SSPL-1.0 + Browserless Commercial License… Compare with Modal Sandboxes →

  5. 5 Workato AI (Workflow Bot Builder) AI sandbox & runtime environments

    also in AI sandbox & runtime environments · same memory unit (file) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ✓ Compare with Modal Sandboxes →

  6. 6 Anchor (Anchor Browser) AI sandbox & runtime environments

    also in AI sandbox & runtime environments · same memory unit (file) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ✓ Compare with Modal Sandboxes →

  7. 7 StackBlitz WebContainers AI sandbox & runtime environments ⚠ stale — no commits since 2025-04

    also in AI sandbox & runtime environments · same memory unit (file) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? ★ 4.7k released 2026-04-14 Compare with Modal Sandboxes →

  8. 8 CodeSandbox AI AI sandbox & runtime environments ⚠ acquired — acquired by Together AI

    also in AI sandbox & runtime environments · same memory unit (file) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Modal Sandboxes →

Ranked by shared memory design (storage, retrieval, conflict handling, memory unit), same section and shared must-haves (open source, self-hosting, MCP), with adoption as a tie-breaker. ✓ confirmed · — no · ? not in the catalog yet. Want picks for your own requirements? Use the chooser. Checking a whole project? Check your stack.