AI · alternatives · 2026
24 alternatives to Why an Open Source JSON-LD Database
We are pleased to launch a public preview of an open source JSON-LD database which combines the simplicity of a document db with the analytical power of semantic graph. We hope it is approachable for most any developer while having the capabilities, when needed, for data interoperability, embedded cell-level security (ReBAC style), rich shape/schema restrictions, data provenance (time travel), and fact inferencing. Why did our team at Fluree build this? Data is increasingly critical for great decision making, AI, and more. The way we typically store and manage data, mainly as an…
This is an open source JSON-LD database that combines document database simplicity with semantic graph capabilities. Built by Fluree, it serves developers who need to manage and analyze data effectively. Key features… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Why an Open Source JSON-LD Database launched in 2023; newer entries below may have overtaken it.
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Fluree AI▲281Combines JSON's simplicity with the power of linked data.
Jul 2026 · flur.ee · its alternatives →
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Hey HN, it’s been just over a year since we launched HelixDB (https://news.ycombinator.com/item?id=43975423), a project a friend and I started in college. It’s an OLTP graph database built on object-storage, with native vector search and full-text search (FTS). Why graph, vector and FTS? Graph databases provide a natural cognitive model for data, vectors allow for a semantic understanding of the entities and relationships in the graph, and FTS provides more specific filtering. Many AI-driven applications attempt to combine all of these functionalities by stitching together…
Jun 2026 · github.com · its alternatives →
- 3
Hey HN, we want to share HelixDB (https://github.com/HelixDB/helix-db/), a project a college friend and I are working on. It’s a new database that natively intertwines graph and vector types, without sacrificing performance. It’s written in Rust and our initial focus is on supporting RAG. Here’s a video runthrough: https://screen.studio/share/szgQu3yq. Why a hybrid? Vector databases are useful for similarity queries, while graph databases are useful for relationship queries. Each stores data in a way that’s best for its main type of query (e.g.…
2025 · github.com · its alternatives →
- 4TA
2020 · terminusdb.com · its alternatives →
- 5
HelixDB▲105An open-source OLTP graph-vector database built in Rust.
Feb 2026 · helix-db.com · its alternatives →
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A totally proof-of-concept FoundationDB based network block device backend - dividuum/fdb-nbd
2018 · github.com · its alternatives →
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One year ago I open-sourced my very first 'real' project and shared it here. I was a college student in my senior year and desperately looking for a job. At the time of sharing it i couldn't even afford a domain and naively let someone buy the one i had my eyes on lol. It's been a hell of a year with this blowing up, me moving to another country, and switching 2 jobs. In a year we somehow managed to hit 26k stars, grow a 1000+ person discord community, and support 37 languages. I couldn't be more grateful for the community that helped this grow, but now i don't know what direction to take…
2025 · drawdb.app · its alternatives →
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Hey all! I released drawDB about a month ago and now it's open source. I hope you find it useful. If you want to check out the app you can go to https://drawdb.vercel.app/ . Thank you:)
2024 · github.com · its alternatives →
- 11BA
2016 · bedquiltdb.github.io · its alternatives →
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Hey HN, we’re building an open specification that lets agents discover and invoke APIs with natural language, built on the OpenAPI standard. agents.json clearly defines the contract between LLMs and API as a standard that's open, observable, and replicable. Here’s a walkthrough of how it works: https://youtu.be/kby2Wdt2Dtk?si=59xGCDy48Zzwr7ND. There’s 2 parts to this: 1. An agents.json file describes how to link API calls together into outcome-based tools for LLMs. This file sits alongside an OpenAPI file. 2. The agents.json SDK loads agents.json files as tools for an LLM that…
2025 · github.com · its alternatives →
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Blazing fast, instant realtime GraphQL APIs on all your data with fine grained access control, also trigger webhooks on database events. - graphql-engine/community/tools/json2graphql at master · hasura/graphql-engine
2019 · github.com · its alternatives →
- 15JA
a lightweight dependency free javascript micro-library for making collapsable trees with JSON
2017 · maxleiter.github.io · its alternatives →
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TABLUM.IO▲159Turn CSV, XML & JSON into a live analysis-ready SQL database
2023 · tablum.io · its alternatives →
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Effortlessly visualize JSON structures as dynamic tree diagrams - The-01-Company/jsontr.ee
2024 · github.com · its alternatives →
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TerminusDB is a distributed, collaborative database designed for building, sharing, versioning, and reasoning on structured data. - terminusdb/terminusdb
2020 · github.com · its alternatives →
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EnterpriseDB (“EDB”), the leader in accelerating Postgres® in the enterprise, today announced its acquisition of Splitgraph, an early-stage disruptor that provides a Postgres compatible serverless SQL API for building data driven applications from hundreds of datasources. This move is seen as a mean
2020 · splitgraph.com · its alternatives →
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A query language for JSON-like structures
2021 · mistql.com · its alternatives →
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Built an open JSON Schema for defining AI agent teams. Multi-agent systems are becoming a real deployment pattern — not single assistants, but teams with roles, handoffs, and human checkpoints. But there's no shared way to define one that travels across frameworks. Every implementation is scattered, locked to whichever tool you picked first. Built the schema to fix that. The schema lives at schema.openenvelope.org and is registered in SchemaStore, so if you drop a .envelope.json file in VS Code you get autocomplete and validation without installing anything. It's also on npm as…
May 2026 · openenvelope.org · its alternatives →
- 22OS
2016 · vpj.github.io · its alternatives →
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Turn any URL into a JSON Schema, Zod, or Pydantic model
Jun 2026 · schema.tabstack.ai · its alternatives →
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An open source cybersecurity protocol for syncing decentralized graph data. - amark/gun
2016 · github.com · its alternatives →
Also compare
- Fluree AI alternatives
- HelixDB – A graph database built on object storage alternatives
- HelixDB – Open-source vector-graph database for AI applications (Rust) alternatives
- TerminusDB – An open source in-memory graph database alternatives
- HelixDB alternatives
- A proof-of-concept FoundationDB based network block device backend alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →