AI · alternatives · 2026

24 alternatives to Keystone – building self-configuring agents

When cloning a repo, we kept hitting the same wall: no Dockerfile, no dev container, no clear path to running it. Asking an agent to fix it directly on your system is risky, as it can clear Docker config, change kernel settings, downgrade packages without warning. Keystone runs the agent inside a Modal sandbox with its own Docker daemon. It iterates until tests pass, then hands you a .devcontainer/ you can just check in. Now your repo knows how to run itself!

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 2 we have checked on their own sites, 2 of them free or with a free tier.

1
Keystone▲125
We kept hitting the same wall: you clone some arbitrary repo and just want it to run without any configuration work. So we built Keystone, an open source tool that spins up a Modal sandbox, runs Claude Code inside it, and produces a working .devcontainer/ config (Dockerfile, devcontainer.json, test runner) for any git repo. We build on the dev container standard, so the output works with VS Code and GitHub Codespaces out of the box. Main use cases: reproducible dev/CI environments, self-describing repos, and safely sandboxed coding agents. Our goal is to encourage all repos to…
Mar 2026 · github.com · its alternatives →
2
Isaiah – open-source and self-hosted app to manage everything Docker▲196
Self-hostable clone of lazydocker for the web. Manage your Docker fleet with ease - will-moss/isaiah
2024 · github.com · its alternatives →
3
Flox▲375
Hey Everyone! Ron here, part of the NixOS Foundation and building Flox. Just coming out of this years NixCon and pretty excited to show hn below :) As of today, NVIDIA officially recognizes Canonical, SUSE, CIQ, and Nix—via Flox—as supported distributors for CUDA. Full blog - https://developer.nvidia.com/blog/developers-can-now-get-cud... This is a huge win for the Nix community. For years, CUDA on Nix was possible but painful—builds could take hours, and redistributing prebuilt binaries was blocked by NVIDIA's licensing requirements. NVIDIA's growing engagement with key…
2024 · flox.dev · its alternatives →
4
Build your Linux from Scratch inside Docker with one command▲94
Docker configuration for building Linux From Scratch system - reinterpretcat/lfs
2017 · github.com · its alternatives →
5DC
Devbox – Containers for better dev environments▲116
I've been frustrated with dependency hell and clutter on my VPS from dev, so I built Devbox: a lightweight, open-source CLI tool that spins up isolated development environments using Docker. Each project runs in its own container, but your code stays in simple flat folders on the host machine—no messing with volumes or sync issues. Environments are disposable, so you can nuke and recreate them without losing your work. Key features: - Instant setup: `devbox init my-project` and you're in a fresh env with `devbox shell`. - Configurable via JSON: Define packages, services, and more in a…
2025 · devbox.ar0.eu · its alternatives →
6
Develop your Python applications easily in clean Docker environments▲119
Develop and run your Python applications in clean Docker environments - macostea/cage
2017 · github.com · its alternatives →
7
Stakpak.dev▲214
Open-source DevOps agent to secure & manage production infra
2025 · stakpak.dev · its alternatives →
8
pi pod – run your pi coding agent in sandboxes on your own serverfree▲121
pi pod runs your pi session in a cloud pod. pipod.dev
19d ago · pipod.dev · its alternatives →
9
Artifact Keeper – Open-Source Artifactory/Nexus Alternative in Rust▲166
I'm a software engineer who keeps getting pulled into DevOps no matter how hard I try to escape it. I recently moved into a Lead DevOps Engineer role writing tooling to automate a lot of the pain away. On my own time outside of work, I built Artifact Keeper — a self-hosted artifact registry that supports 45+ package formats. Security scanning, SSO, replication, WASM plugins — it's all in the MIT-licensed release. No enterprise tier. No feature gates. No surprise invoices. Your package managers — pip, npm, docker, cargo, helm, go, all of them — talk directly to it using their native…
Feb 2026 · github.com · its alternatives →
10
Run LLMs in Docker for any language without prebuilding containers▲26
I've been looking for a way to run LLMs safely without needing to approve every command. There are plenty of projects out there that run the agent in docker, but they don't always contain the dependencies that I need. Then it struck me. I already define project dependencies with mise. What if we could build a container on the fly for any project by reading the mise config? I've been using agent-en-place for a couple of weeks now, and it's working great! I'd love to hear what y'all think
Jan 2026 · github.com · its alternatives →
11
Depot – fast, remote Docker container builds▲141
Hey HN! We’re Kyle and Jacob and we are excited to show you Depot (https://depot.dev) and get your feedback! Depot is a hosted Docker container build service, providing fully managed remote builds from CI and from your terminal. We support both Intel and Arm builds natively. As application and platform engineers, we have experienced the challenge of keeping Docker container build times fast. From optimizing and reoptimizing Dockerfiles, to implementing layer caching in CI, to running & maintaining custom runners for multi-platform images. Still today, there are limitations with the…
2022 · depot.dev · its alternatives →
12
Container Use for Agents▲82
Development environments for coding agents. Enable multiple agents to work safely and independently with your preferred stack. - dagger/container-use
2025 · github.com · its alternatives →
13
zero▲94
One command to deploy Docker containers to your own server
Apr 2026 · shipzero.sh · its alternatives →
14
Docker in the browser using x86-to-WASM recompilation▲119
Run KolibriOS, Linux or Windows 98 in your browser
2022 · copy.sh · its alternatives →
15
Dockerized – Run CLI tools without installation▲78
Dockerized is like npx for unix tools: Run popular cli tools without installation. Example: dockerized npm init dockerized python2 somescript.py Run an older version of a tool: NODE_VERSION=15.0 dockerized node Use cases: - Maintaining multiple versions of an app - Installing without polluting host machine - Quickly run some commands you may not have installed Features: - intuitive use. Just the original command, but with 'dockerized' in front. - dockerized apps can access the current directory and read/modify files, just like native apps. - no need to know which docker image this…
2022 · github.com · its alternatives →
16
Run your own PaaS based on Docker and Traefik /w LetsEncrypt and stats▲16
Run your own PaaS using Docker, Traefik, and great analytics - almarklein/mypaas
2020 · github.com · its alternatives →
17
fline▲9
Your agent ships the repo. We build it and run it.
Aug 2026 · dev.fline.sh · its alternatives →
18IR
InstaDocker – Run any Docker container on the cloud instantly▲54
2015 · instadocker.com · its alternatives →
19AD
Accelerated Docker builds on your local machine with Depot (YC W23)▲64
Hello HN! We just launched a new feature we built at Depot that accelerates Docker image builds on your local machine in a team environment, and we wanted to share some of the details with you all. The launch blog post: https://depot.dev/blog/local-builds Depot is a hosted container build service - we run fully managed Intel and Arm remote build machines in AWS, with large instance sizes and SSD cache disks. The machines run BuildKit, the build engine that powers Docker, so generally anything you can `docker build`, you can also `depot build`. Most people use Depot in CI,…
2023 · its alternatives →
20
Hosting 100 Linux dev environments on one VM using LXC▲16
Open-source agent runtime — SSH-native isolation, eBPF egress policy, Kubernetes + LXC backends, GPU passthrough, MCP-native CLI - FootprintAI/Containarium
Jan 2026 · github.com · its alternatives →
21
Stacktora▲13
Define once, run anywhere.
Jul 2026 · stacktora.com · its alternatives →
22
Nucleus – A security-hardened, Nix-native container runtime▲40
Hi HN, I've been building Nucleus, a lightweight Linux container runtime focused on two workloads: ephemeral AI-agent sandboxes and declarative NixOS services. It's a single Rust binary, no daemon. It is not a Docker replacement and not a strict subset of Docker either. I dropped the entire image-and-distribution half (no Dockerfile, no layers, no registry, no pull/push, no persistent storage layer) in exchange for going deeper on isolation and reproducibility. The rootfs is either a directory copied into tmpfs (agent mode) or a Nix-built closure mounted read-only (production mode). If…
Jun 2026 · github.com · its alternatives →
23
Open-source Docker image to run Chrome browsers in your cloud▲20
If you’ve ever worked with web scraping or automation using Puppeteer or Playwright, you know that running Chrome can be tricky. While headless mode (Chrome with no display) often works, some page elements only render in headed mode, forcing you to run Chrome with a display. This usually means bloating your Dockerfile with complex dependencies like xvfb. Updating your server or Lambda container to handle this can increase costs and lead to dependency hell. The Solution: I’ve built a streamlined solution—a Docker image that runs Chrome with all its necessary dependencies and exposes a FastAPI…
2024 · hub.docker.com · its alternatives →
24
Run AI Agents on your cloud infrastructurefree tier▲12
Hi, founder of Okteto here! We’ve been experimenting with AI agents in our workflows at Okteto. Running them locally worked at first, but quickly became painful. git worktrees, multiple terminals, and messy context switches slowed us down. So we built Agent Fleets: ephemeral, fully managed environments for AI agents, built on top of Okteto’s development platform. Each agent runs in its own containerized environment on your infrastructure, with the services, tools, and policies it needs. You can spin up agents with a single click or API call. No local setup. No git worktrees. The beta…
2025 · okteto.com · its alternatives →

Also compare

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 →