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

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

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

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

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.

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

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.

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

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 Every fact carries valid time and transaction time, so you time-travel to what was known at any instant, supersede outdated facts without losing history, and detect contradictions.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.

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.

Bi-temporal append-only DB server

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.

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

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

Local MCP memory server for LLMs. Bi-temporal graph + vector + Cypher queries + auto-write/auto-recall hooks for Claude Code. Works with Ollama, LM Studio, Anthropic, OpenAI.