Dev tools · alternatives · 2026

24 alternatives to Aster by AsterWise

Intelligent model routing for code, agents and workflows

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 3 we have checked on their own sites, 3 of them free or with a free tier.

1. 1OS
   Open-source model routing for coding agents at Astra-level performance▲122

   15d ago · its alternatives →

2. 2
   Microsoft-Decision-1▲173

   Microsoft’s decision model for agents and workflows

   6d ago · commandline.microsoft.com · its alternatives →

3. 3
   Harness Router▲79

   A fast decision layer for smarter AI tool routing.

   19d ago · harness-router.vercel.app · its alternatives →

4. 4
   Reika▲72

   A coding agent CLI designed around small local models first

   9d ago · reikacode.com · its alternatives →

5. 5
   Acyclic▲69

   Rapid agent swarms for any agentic workflow

   6d ago · acyclic.dev · its alternatives →

6. 6
   Tidenfree tier, from $49/mo▲207

   Intent verification for coding agents

   6d ago · tiden.ai · its alternatives →

7. 7
   Toone▲143

   Build complex, reliable AI agent workflows & routines

   Sep 2026 · trytoone.com · its alternatives →

8. 8
   Semwright▲67

   Give AI agents structured access to real software

   8d ago · semwright.com · its alternatives →

9. 9
   Smart model routing directly in Claude, Codex and Cursor▲216

   We built a model router that plugs into coding agents (e.g. Claude Code, Codex, Cursor, etc.) and intelligently sends requests to the best model to serve them. Here's a quick demo of running it locally: https://www.youtube.com/watch?v=isKhAyivtfM. At Weave, we write most of our code with AI, and it's been getting more expensive. This came to a head when Opus 4.7 was released and, thanks to its tokenizer changes, our costs shot up. We knew we didn't need Opus for everything but we didn't want to lose out on the intelligence for the cases where you really need it. So we decided…

   Jun 2026 · github.com · its alternatives →

10. 10
    Experiential Labs▲136

    Open source AI gateway turning traffic into a better model

    Sep 2026 · experientiallabs.ai · its alternatives →

11. 11
    Brnch▲81

    Modern code hosting for the agent era

    10d ago · brnch.io · its alternatives →

12. 12
    devpit▲117

    A native control room for your Claude Code agents

    13d ago · devpit.app · its alternatives →

13. 13
    vgpu▲39

    The WebGPU library, designed for agents

    24d ago · vgpu.sh · its alternatives →

14. 14
    M9Rfree▲56

    Multiplayer space for your AI coding agents and teams

    28d ago · app.m9r.workers.dev · its alternatives →

15. 15
    AgentSDR▲106

    Open-source AI SDR

    10d ago · agentsdr.ai · its alternatives →

16. 16
    ContextsBase▲75

    Context Infrastructure for Coding Agents

    28d ago · contextsbase.com · its alternatives →

17. 17
    Styx▲65

    An agentic development environment (ADE) for Mac

    21d ago · heystyx.com · its alternatives →

18. 18
    PromptFlow – Build LLM flows as directed graphs▲6

    2023 · github.com · its alternatives →

19. 19SC
    Serverless code execution, but for AI agents▲7

    2024 · sandboxed.ai · its alternatives →

20. 20
    Coordination Layer for Coding Agentsfree▲9

    We built an open sourced coordination layer for AI agents working on the same repository. Detects work duplication and design conflicts early

    Aug 2026 · twing.dev · its alternatives →

21. 21
    Multistack, a TUI environment for parallel coding agents▲5

    Open source lightweight TUI for parallel agent management - gi-dellav/multistack

    Sep 2026 · github.com · its alternatives →

22. 22BA
    Brig – A MicroVM sandbox for AI coding agents on Mac and Linux▲9

    23d ago · its alternatives →

23. 23AC
    AI Coding Companion▲6

    2024 · codepal.vercel.app · its alternatives →

24. 24
    Poodle, Python-to-PDDL Compiler and AI Planning SDK▲9

    2019 · github.com · its 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 →