bitemporal

An immutable SQL database for application development, time-travel reporting and data compliance. Developed by @juxt

World's first open-source enterprise world model.

Lucene based secondary indexes for Cassandra

Persistent storage for energy portfolios: Assets, grid topology, and bitemporal time series in one connected database. Built on PostgreSQL + ClickHouse.

Lightweight ultra-fast library to store data in bi-temporal format

Cognitive memory for LLM agents — local-first, and shareable across a team through the cloud.

Open-source bitemporal knowledge graph — long-term memory for AI agents. Hybrid retrieval, conflict-aware ingest, GDPR forget. REST + native MCP.

Embedded graph memory for AI agents, mobile apps, and the browser.

An embedded evidence database for facts that disagree—preserving source, time, certainty, and history.

An external memory for LLMs: a bi-temporal knowledge graph with hybrid (keyword + vector) retrieval and a self-improving reflection loop. Benchmarked to beat flat vector RAG on corrections and time-versioned queries.

Memory for Hermes, Codex, Claude Code, OpenCode, Devin, and any MCP agent. daimon-memory v2: one binary, local or remote server, hybrid keyword+vector recall, bitemporal, multitenant.

Every tool you've tried edits the document. That's why nothing holds — the document was never the source. Meaning is. Branch it, simulate a change before it exists, bind an approval to the exact state a human read, and let a merge preserve a conflict instead of inventing a number. Verified offline by a stranger. No model, no account. MIT.

Toy bitemporal key-value database and visualizer

(Bi-temporal) data modelling tool inspired by Anchor modeler, for PostgreSQL

A Rust-native agentic memory substrate built on the selene-db graph engine: a bi-temporal knowledge graph, hybrid retrieval, and an optional MCP server.

Always-fused retrieval over a bitemporal knowledge graph on Azure - Gremlin traversal, ingest-time contradiction detection, two-threshold entity resolution. Part 2 of the persistent knowledge layer.

Turns any text stream into a dated history of how its subject changed. Point it at your Claude Code / OpenCode sessions to track how you think and work, or at market news, research notes, or any corpus to track how that changed — raw records to observations to bi-temporal facets to narrative, with provenance, served over MCP. Single pure-Go binary.

A bitemporal, graph-backed memory system for AI coding agents.

Quant market-data platform: point-in-time ingestion (Sharadar SF1/SF2/SF3/SEP, FRED vintages), TimescaleDB, pure-SQL feature factory, PCA (Higham PSD repair) + EWLS-ridge Numba kernels + Huber-WLS, purged walk-forward XGBoost, CVXPY; and the instruments that found 3 biases and killed its own strategy.

Slides of the talk about Datomic, XTDB and other immutable databases