Best forApps already on Supabase — storage access follows the same row-level security policies as your data.
Trade-offOnly worth it if the rest of your backend is on Supabase.
Used by 3 makers' products for this · Cloudflare R2 vs Supabase →
Cloudflare R2 alternatives
Not a ranking: each option is described by the situation it fits, with its trade-off, whether it's open source or free to start, whether AI coding agents can work with it, and how many makers' products use it for this job.
5 open source or self-hostable9 with a free tier5 ready for AI agents
For file storage
The whole decision →Raw object storage or an upload service. Buckets (S3 and the S3-compatible clones) are cheap and portable but leave uploads, validation and access rules to you; upload services and platform-bundled storage hand you a working upload flow and pick the bucket for you.
Cloudflare R2 (Object storage): Files that get downloaded often — the S3 API without egress fees. Trade-off: Fewer storage tiers and event features than S3.
From Pay as you goIn Lovable
Best forApps already on AWS, or ones that need lifecycle rules, storage tiers and event triggers.
Trade-offEgress fees add up when files are downloaded a lot, and IAM setup is fiddly for one person.
No maker product tracked for this yet
Free tierFrom $10/mo
Best forTypeScript apps that want typed upload endpoints and drop-in upload components instead of wiring presigned URLs.
Trade-offFiles live in UploadThing's storage; moving away means migrating them.
No maker product tracked for this yet
Best forNext.js apps hosted on Vercel that need simple uploads with no extra account.
Trade-offTies storage to your Vercel bill; usage-based transfer costs grow with traffic.
No maker product tracked for this yet
Best forAn open-source upload widget with drag-and-drop, progress, resumable uploads and direct-to-S3, in front of whatever bucket you choose.
Trade-offYou still set up presigned URLs or a companion server, and the bucket rules, yourself.
Used by 2 makers' products for this
Open sourceFree tierFrom Contact sales (AIStor Enterprise)
Best forThe long-standing S3-compatible server for self-hosting, with many existing guides, Docker setups and client SDKs.
Trade-offThe open-source community edition is AGPL, ships as source only, and its repository was archived in 2026; new features go into the commercial AIStor editions.
Used by 1 makers' products for this
Backblaze B2
Object storageBest forLarge volumes of files kept for a long time — backups, archives, media libraries — at low storage cost.
Trade-offFree egress is capped relative to what you store; fewer regions and integrations than the big clouds.
No maker product tracked for this yet
Open sourceFree tierFrom $2/TB/mo
Best forRunning your own S3-compatible storage for lots of files, from one server up to a cluster.
Trade-offSeveral components (master, volume, filer, S3 gateway) to learn; durability and backups are yours to get right.
No maker product tracked for this yet
Open sourceFree tier
Best forA small, single-binary S3-compatible store for a few self-hosted machines, even in different locations.
Trade-offImplements the common S3 calls but not every feature (such as versioning or object lock); built for small deployments rather than huge throughput.
No maker product tracked for this yet
Best forMobile and web apps on Firebase — Cloud Storage uploads straight from the client SDK, guarded by security rules.
Trade-offAccess rules are written in Firebase's own rules language; storage and download bandwidth follow Google Cloud pricing.
No maker product tracked for this yet