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Bub: Bub it. Build it. A tiny agent runtime, composable with plugins. It is listed under Development & Code on AI Registry as a free tool.
The tools below are approved listings in the same category, ordered by how closely their tags match Bub. This is an automatic list. We have not written a researched verdict for Bub yet, so treat it as a shortlist and check each vendor's pricing page before switching.
Built from each tool's listing. Vendors can update their own listing after claiming it.
Agent framework for the JVM.
Embabel is an agentic AI framework for the Java Virtual Machine. It is written in Kotlin with a usage model intended to feel natural from Java, and its argument is that the qualities which matter once AI becomes mission critical, namely context handling, reliability, type safety, performance, observability and integrat...
Codex for Android, iOS & Mac.
Aether is an open source AI agent app for the phone and desktop, originally built for Android and now also available for iOS and macOS. It pairs a polished conversation interface, inspired by apps such as ChatGPT and Codex, with a local agent engine built on the Pi harness kernel, so the agent can run shell commands, c...
AI agents on autopilot.
AgentUse is an open source agent runtime for recurring work. Agents are defined as plain Markdown files, with model settings and capabilities in YAML frontmatter and the instructions written in natural language, and AgentUse supplies the operating layer around them: the agent loop, tools, durable sessions, schedules, a...
Universal memory layer for AI Agents.
MemMachine is an open source memory layer for AI agents. It lets applications store, recall and learn from data and preferences gathered in past sessions, so assistants can respond with context instead of starting every conversation from zero. The memory persists across sessions, agents and language models, and builds ...
Event-sourced graph runtime for durable and stateful agents
activegraph is an open source Python runtime for long running AI agents from Yohei Nakajima, the creator of BabyAGI. It records everything an agent does in an append only event log and projects that log into a live graph of beliefs, tasks, evidence, decisions and dependencies. The graph becomes the agent's world: what ...
ADHD — a skill for coding agents.
adhd is an open source reasoning harness for coding agents published by Divergent Labs, a research group building reasoning systems around divergent, nonlinear thinking. Instead of letting a model commit to its first plausible idea, the harness generates many candidate solutions in parallel, each under a different cogn...