Chroma alternatives

Limited native hybrid (users build RRF custom). Fast Rust core (v2.5). Acquired by Replit (definitive agreement announced 2026-10-23); Chroma Cloud is winding down (writes disabled 2026-11-22, reads disabled 2026-12-22) while open-source ChromaDB continues… Full Chroma record →

  1. 1 Elasticsearch Vector-database infrastructure

    also in Vector-database infrastructure · same storage (vector) · same retrieval (similarity) · same conflict handling (overwrite) · same memory unit (chunk) · also open source · also self-hostable

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 78k AGPL-3.0 / SSPL-1.0 / Elastic-2.0 (choice) Compare with Chroma →

  2. 2 Milvus Vector-database infrastructure

    also in Vector-database infrastructure · same storage (vector) · same retrieval (similarity) · same conflict handling (overwrite) · same memory unit (chunk) · also open source · also self-hostable

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 46k released 2026-10-14 Apache-2.0 Compare with Chroma →

  3. 3 Qdrant Vector-database infrastructure

    also in Vector-database infrastructure · same storage (vector) · same retrieval (similarity) · same conflict handling (overwrite) · same memory unit (chunk) · also open source · also self-hostable

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 35k released 2026-10-05 Apache-2.0 Compare with Chroma →

  4. 4 Weaviate Vector-database infrastructure

    also in Vector-database infrastructure · same storage (vector) · same retrieval (similarity) · same conflict handling (overwrite) · same memory unit (chunk) · also open source · also self-hostable

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 17k released 2026-10-21 BSD-3-Clause Compare with Chroma →

  5. 5 LanceDB Vector-database infrastructure

    also in Vector-database infrastructure · same storage (vector) · same retrieval (similarity) · same conflict handling (overwrite) · same memory unit (chunk) · also open source · also self-hostable

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 11k released 2026-10-07 Apache-2.0 Compare with Chroma →

  6. 6 Vespa Vector-database infrastructure

    also in Vector-database infrastructure · same storage (vector) · same retrieval (similarity) · same conflict handling (overwrite) · same memory unit (chunk) · also open source · also self-hostable

    OSS ✓ Self-host ✓ Managed ✓ MCP ? ★ 7.1k Apache-2.0 Compare with Chroma →

  7. 7 pgvector Vector-database infrastructure

    also in Vector-database infrastructure · same storage (vector) · same retrieval (similarity) · same conflict handling (overwrite) · same memory unit (chunk) · also self-hostable · also offered managed

    OSS — Self-host ✓ Managed ✓ MCP ✓ ★ 24k released 2026-07-29 PostgreSQL Compare with Chroma →

  8. 8 Activeloop Deep Lake Vector-database infrastructure

    also in Vector-database infrastructure · same storage (vector) · same retrieval (similarity) · same conflict handling (overwrite) · same memory unit (chunk) · also open source · also self-hostable

    OSS ✓ Self-host ✓ Managed ✓ MCP ? ★ 9.3k released 2026-08-25 Apache-2.0 Compare with Chroma →

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.