Alternatives
10 best Fly.io alternatives
Tools that cover the same task as Fly.io (code), ranked by how completely their pricing, free tier and API access are documented. Checked Oct 4, 2026.
- Fly.io starts at
- Not listed
- Free plan
- Free trial
- API
- API available
- 01
smol machines
smol machines provides fast, hardware-isolated Linux microVMs that run locally via smolvm, in smol cloud, or self-hosted with the same SDK and .smolmachine artifact. Pricing combines hourly base machine fees plus consumption for CPU, memory, disk, and egress, with account credits for new users and tiered monthly platform fees on Pro and Startup plans.
Best for: Developers and platform teams who need portable microVMs for agent sandboxes, CI workloads, or always-on apps across laptop and cloud environments.
- 02
Prisma Postgres
Prisma Postgres is a managed, serverless PostgreSQL service aimed at TypeScript applications. It advertises production-ready Postgres with branchable databases per pull request, autoscaling for traffic spikes, spend limits, and integrated Prisma Studio and query insights so teams can ship without running their own database infrastructure.
Best for: TypeScript teams that want managed Postgres aligned with Prisma tooling instead of self-hosting or wiring a separate cloud database.
- 03
Devento
Devento helps builders go from AI chat to full-stack applications deployed in secure micro-VM sandboxes. The platform showcases agentic models that install frameworks, edit code, and ship projects from a conversational interface.
Best for: Developers who want an AI agent to scaffold, modify, and deploy full-stack apps inside isolated sandboxes.
- 04
Ardent
Ardent provides near-instant branching for PostgreSQL databases so coding agents and developers can test against production-faithful copies safely. Clones spin up in seconds, isolate compute and storage from production, and scale to terabyte datasets with usage-based compute and storage billing on paid tiers.
Best for: Teams using AI coding agents or DB-heavy CI who need fast, isolated Postgres clones without risking production.
- 05
Devv
Devv is an AI coding agent for indie builders and small teams to ship full-stack AI-powered products with native integrations. The platform advertises fast project generation, search, and Pro subscriptions with referral credits toward billing.
Best for: Solo developers and small teams prototyping full-stack AI apps who want an integrated builder instead of glue code.
- 06
Dualite
Dualite is a vibe-coding platform that turns prompts into web and mobile apps, dashboards, and AI agents without traditional coding. It supports Figma-to-code, GitHub import, backend databases, authentication, and downloads with models such as GPT 5.1, Claude Sonnet 4.5, and Gemini 3 Pro.
Best for: Founders and product builders who want fast prototypes and production-ish apps from natural language prompts across web and mobile.
- 07
Kompy
Plans meter monthly credits with concurrency and request-rate limits for developers and AI agents.
Best for: Developers and agent builders who need structured Walmart catalog and pricing history without maintaining scrapers.
- 08
Archil
Archil is AI infrastructure for running stateful agents on versioned disks, sandboxes, and databases with governed access to production data without copies or cold starts. SDK examples show agents using disk tools to read and write files with strong consistency across Linux, macOS, and container mounts.
Best for: Agent platforms, software factories, robotics teams, and research groups that need persistent agent workspaces on real data.
- 09
Browserbase
Usage-based plans start free and scale to Developer and Startup tiers for production agent workloads.
Best for: Teams building agents that must browse, authenticate, and extract data from sites without traditional APIs.
- 10
Maritime
Maritime hosts persistent AI agents, each in its own Firecracker micro-VM with durable disk. Agents sleep when idle, wake in about a second, and scale from a free tier to paid plans with configurable RAM, SSD, and always-on options.
Best for: Developers shipping user-specific or long-running agents who need isolated VMs with fast wake times.
Fly.io alternatives: common questions
What is the best free alternative to Fly.io?
Prisma Postgres has an ongoing free plan. Free tier with a hard cap and no credit card required; pricing page lists 200,000 operations included on the free Postgres plan. Free plans change, so check the vendor before relying on one.
What is the cheapest Fly.io alternative?
Prisma Postgres has the lowest listed starting price at $10/mo.
Which Fly.io alternatives have an API?
smol machines, Prisma Postgres, Kompy, Archil, Browserbase mention API or developer access.