Dev tools · alternatives · 2026
24 alternatives to Open Source Rule Engine
A JSON rule engine for declarative business logic.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
A rules engine for Clojure(Script). Contribute to oakes/odoyle-rules development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 2
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 →
- 3GD
We're a team of three friends who have been working with forms and Open Source for a decade, and we joined forces together to create something where we can apply all of our experience. We recently released GolemUI, an Open Source library to generate forms dynamically from JSON definitions, with a typed layer to simplify authoring. This library has a lot to offer. These are the main characteristics: 1. A JSON engine. The form is governed by a JSON definition that you can store in a DB, version, diff, or generate it with LLMs as a validated JSON. 2. We provide also 28 headless components (and…
Jul 2026 · golemui.com · its alternatives →
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We've open-sourced Klarity - a tool for analyzing uncertainty and decision-making in LLM token generation. It provides structured insights into how models choose tokens and where they show uncertainty. What Klarity does: - Real-time analysis of model uncertainty during generation - Dual analysis combining log probabilities and semantic understanding - Structured JSON output with actionable insights - Fully self-hostable with customizable analysis models The tool works by analyzing each step of text generation and returns a structured JSON: - uncertainty_points: array of {step, entropy,…
2025 · github.com · its alternatives →
- 6
Build fully native UIs in JSON and push them live instantly.
2019 · its alternatives →
- 7
FSET▲93A JSON Schema editor, no more writing json schema by hand
2021 · fset.app · its alternatives →
- 8
2019 · domino-clj.github.io · its alternatives →
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- 10
Hi everyone, we’re a small team, supported by Mozilla, who are working on re-imagining a UI for training, tuning and testing local LLMs. Everything is open source. If you’ve been training your own LLMs or have always wanted to, we’d love for you to play with the tool and give feedback on what the future development experience for LLM engineering could look like.
2025 · github.com · its alternatives →
- 11
Ludwig 0.8▲109Build and fine-tune custom LLMs on your private data
2023 · ludwig.ai · its alternatives →
- 12OO
Hi! One of the creators here. Very proud to finally be able to show you what we've been working on for over a year now. Curious to hear your thoughts! Objectiv is open-source (APLv2) product analytics infrastructure. It's built around a generic but strict event taxonomy, open/common data- and infra tools (currently PG, snowplow, working on bigquery with more to come), and the analyses are done using our pandas-like, SQL speaking modeling library called Bach. As a result, we’re moving towards a vision wherein models can be shared openly, independent of product, platform[1] or data…
2022 · objectiv.io · its alternatives →
- 13
Please forgive the sign up. It means we can give away and keep track of free inference usage/no API keys needed. Happy to send sign in credentials on request if you prefer.
2025 · enginelabs.ai · its alternatives →
- 14
Fast, Clojure-based rule engine. Contribute to yipeeio/arete development by creating an account on GitHub.
2018 · github.com · its alternatives →
- 15OS
2016 · vpj.github.io · its alternatives →
- 16
UI as finite-state machine . Contribute to stepanvanzuriak/Finite development by creating an account on GitHub.
2018 · github.com · its alternatives →
- 17
Rules Engine based on State Algebra. Contribute to dmitry-lesnik/vector-logic development by creating an account on GitHub.
Nov 2025 · github.com · its alternatives →
- 18
We recently open-sourced Hive after using it internally to support real production workflows tied to contracts totaling over $500k. Instead of manually wiring workflows or building brittle automations, Hive is designed to let developers define a goal in natural language and generate an initial agent that can execute real tasks. Today, Hive supports goal-driven agent generation, multi-agent coordination, and production-oriented execution with observability and guardrails. We are actively building toward a system that can capture failure context, evolve agent logic, and continuously improve…
Feb 2026 · github.com · its alternatives →
- 19
Open-source design-method engine for Claude Code, Codex & Cursor. 23 agent skills for fixed design judgment, multiple grammars, semantic palettes, reference compilation, and evidence-verified UI. MIT. - bitjaru/styleseed
Jul 2026 · github.com · its alternatives →
- 20
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 →
- 21
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…
2023 · flur.ee · its alternatives →
- 22MO
Warning: this whole post is a blatant plug for my Open Source project https://github.com/etiennesillon/ModelRunner There is lot of discussion around no code platforms and why developers don’t like them. My view is that they can be very useful to quickly get through the boring parts of a project, like creating master data management screens for example. So I’ve built my own version which interprets models at run time and, it turns out, understands natural language queries too! Hi, my name is Etienne, I love coding and I’ve been doing it for a few decades now so I’d rather…
2022 · modelrunner.org · its alternatives →
- 23
Entish is a declarative Datalog-like language for formal RPG rules - etherealmachine/entish
2021 · github.com · its alternatives →
- 24
:tropical_drink: A Clojure library for talking to your database. - taylorlapeyre/oj
2014 · github.com · its alternatives →
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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 →