Latitude / Voyage alternatives

AI Dungeon's maker. Voyage (April 2026) launched as a creator platform for AI RPGs. World Engine (5 years in dev) is dedicated AI tracking characters, objects, backstories, relationships independently from the narrative AI; persistent world state evolves with… Full Latitude / Voyage record →

  1. 1 Decagon Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph) · same retrieval (graph-traversal) · same memory unit (episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Latitude / Voyage →

  2. 2 NVIDIA ReMEmbR Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (vector) · same retrieval (similarity) · same memory unit (episode)

    OSS — Self-host ✓ Managed — MCP ? ★ 359 Custom Compare with Latitude / Voyage →

  3. 3 SG-Nav Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph) · same retrieval (graph-traversal) · same memory unit (scene-graph)

    OSS ✓ Self-host ✓ Managed — MCP ? ★ 355 MIT Compare with Latitude / Voyage →

  4. 4 Harvey Memory Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph, vector) · same retrieval (graph-traversal, similarity) · same memory unit (episode) · also offered managed

    OSS ? Self-host ✓ Managed ✓ MCP ✓ Compare with Latitude / Voyage →

  5. 5 Inworld AI Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph, vector) · same retrieval (graph-traversal, similarity) · same memory unit (episode) · also offered managed

    OSS ? Self-host ✓ Managed ✓ MCP ? Compare with Latitude / Voyage →

  6. 6 Sierra Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph, vector) · same retrieval (graph-traversal, similarity) · same memory unit (episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Latitude / Voyage →

  7. 7 Skild Brain Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (vector) · same retrieval (similarity) · same memory unit (episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Latitude / Voyage →

  8. 8 Nomi AI Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph) · same retrieval (graph-traversal) · same memory unit (episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Latitude / Voyage →

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.