Perplexity Comet alternatives

AI-native Chromium-based browser. Assistant operates across tabs and sessions; persistent memory of preferences; multi-step agentic tasks without leaving the browser. Memory is opt-in and server-side; enterprise memory tier separately available. Full Perplexity Comet record →

  1. 1 Browserbase Browser-agent memory

    also in Browser-agent memory · same storage (file) · same retrieval (extraction-pull) · same memory unit (episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ✓ Compare with Perplexity Comet →

  2. 2 Sigma (Private AI Browser) Browser-agent memory

    also in Browser-agent memory · same storage (file, vector) · same retrieval (similarity) · same memory unit (episode, document) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Perplexity Comet →

  3. 3 Pydantic-AI + Hindsight Framework-embedded memory

    same storage (vector) · same retrieval (similarity) · same memory unit (episode) · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 20k released 2026-04-15 MIT Compare with Perplexity Comet →

  4. 4 Abridge Vertical / domain-specific AI memory

    same storage (file, vector) · same retrieval (similarity, extraction-pull) · same memory unit (episode, document) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Perplexity Comet →

  5. 5 Aleph Alpha PhariaAI / PhariaCatch Dedicated memory layers

    same storage (file, vector) · same retrieval (similarity, extraction-pull) · same memory unit (document) · also offered managed

    OSS ? Self-host ✓ Managed ✓ MCP ? Compare with Perplexity Comet →

  6. 6 Dia (Atlassian) Browser-agent memory ⚠ acquired — acquired by Atlassian

    also in Browser-agent memory · same storage (file) · same retrieval (extraction-pull) · same memory unit (episode, document) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ✓ Compare with Perplexity Comet →

  7. 7 Friend Voice-first / wearable AI memory

    same storage (vector) · same retrieval (similarity) · same memory unit (episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Perplexity Comet →

  8. 8 Granola Voice-first / wearable AI memory

    same storage (file) · same retrieval (extraction-pull) · same memory unit (episode, document) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ✓ Compare with Perplexity Comet →

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.