A curated list to help you manage temporal data across many modalities 🚀.

An open-source, opinionated time-series database built on PostgreSQL & ClickHouse.

Python SDK for LUSID by FINBOURNE, a bi-temporal investment management data platform with portfolio accounting capabilities.

A comprehensive addon tool for managing data grid environments by distributed workspaces and online use case bundles

A lightweight Pythonic data model for time series data, interoperable with NumPy, Pandas and Polars.

Hyperlocal disaster damage assessment using bi-temporal street-view imagery and pre-trained vision models https://doi.org/10.1016/j.compenvurbsys.2025.102335

Java SDK for LUSID by FINBOURNE, a bi-temporal investment management data platform with portfolio accounting capabilities.

A cognitive substrate for AI agents — hyperdimensional memory with first-class goals, beliefs, sensory, self-model, and a non-destructive unlearn primitive. Rust top to bottom, embedded-first, no LLM in the read path. One binary, no query language.

Zero-infrastructure, local-first memory for AI agents. One SQLite file — no Postgres, Neo4j, or cloud. Bi-temporal supersession (updates, never deletes), four-channel hybrid retrieval, and a drop-in MCP server. Runs offline on cheap models. Apache-2.0. Bring your own benchmark.

Perfect memory. Exact reasoning. Complete history for AI agents.

Bi-temporal agent long-term memory: SQLite-backed MCP server with recall ranking, hybrid vector+FTS recall, and a source-staleness signal

An experimental distributed database built in Rust. It uniquely combines Vector Similarity Search (for AI applications) with Bi-Temporal Data Management (Time Travel) and Distributed Consensus (Raft).

A benchmark for long-horizon organizational memory in AI agents: a synthetic, bi-temporal, multi-author/multi-channel corpus with a evaluation harness over publicly available memory systems.

GapTime: bi-temporal knowledge-graph memory for production agents. Every fact carries valid time and transaction time, so you time-travel to what was known at any instant, supersede outdated facts without losing history, and detect contradictions. Zero dependencies, TypeScript, edge-ready.

Bi-temporal append-only DB server

Temporal tables extension for PostgreSQL. Automatically tracks Transaction Time (system time) on any table using range types and a high-performance C-based AFTER ROW trigger.

XTDB bi-temporal player state store for football analytics

Local-first memory for Claude Code and any MCP client: hybrid search + knowledge graph in one SQLite file, $0/token, no cloud.

JavaScript SDK for LUSID by FINBOURNE, a bi-temporal investment management data platform with portfolio accounting capabilities.

Graph-primary, bi-temporal, hybrid-retrieval knowledge base — the shared 'company brain' for a fleet of AI agents.