Dev tools · alternatives · 2026
24 alternatives to CallFS – S3-style object store in one Go binary (MIT)
We started CallFS after yet another late-night “why did the uploads vanish?” incident. Our small team had stitched together rsync, a fragile NFS mount, and an S3 bucket—none of it observable, all of it waiting to bite us. So we wrote a single-process file service in Go that: • Speaks the S3 API (so existing tooling works). • Stores hot data on local disks for speed; cold data can sit in any S3-compatible bucket. • Exposes Prometheus metrics and JSON logs by default, because “what happened?” shouldn’t be guesswork. • Ships as a ~25 MB static binary—no external deps, MIT license. Today it’s…
CallFS is an S3-compatible object storage service built as a single Go binary. It stores frequently accessed data locally on disk for speed while archiving cold data to S3-compatible buckets. The service includes… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
ZeroFS serves S3-compatible buckets as POSIX filesystems over NFS and 9P, or as raw block devices over NBD. Data is compressed and encrypted before upload.
Jul 2026 · zerofs.net · its alternatives →
- 2
ZeroFS: A log-structured filesystem for S3. ZeroFS serves S3-compatible buckets as POSIX filesystems over NFS and 9P, or as raw block devices over NBD. - GitHub - Barre/ZeroFS: ZeroFS: A log-structured filesystem for S3. ZeroFS serves S3-compatible buckets as POSIX filesystems over NFS and 9P, or as
2025 · github.com · its alternatives →
- 3
- 4SP
Last week SWYX nerd-sniped me into building an Open-source Dropbox. Here is Locker: the ultimate open-source Google Drive/box/Dropbox alternative - Provider agnostic (S3, R2, vercel blob, local) - BYOB (Bring your own bucket) - Virtual file system - QMD Search plugin
Apr 2026 · locker.dev · its alternatives →
- 5
Most S3 usage is PUT, GET, DELETE, LIST with basic auth. This does exactly that. SigV4 auth, multipart uploads, range requests. Storage is just files on disk. No versioning, no ACLs, no encryption. Use MinIO or AWS if you need those.
Dec 2025 · github.com · its alternatives →
- 6
Simple Object Storage (I wish I could call it Steve's Simple Storage, or S3 ;) - skx/sos
2016 · github.com · its alternatives →
- 7
I built a SQLite VFS in Rust that serves cold queries directly from S3 with sub-second performance, and often much faster. It’s called turbolite. It is experimental, buggy, and may corrupt data. I would not trust it with anything important yet. I wanted to explore whether object storage has gotten fast enough to support embedded databases over cloud storage. Filesystems reward tiny random reads and in-place mutation. S3 rewards fewer requests, bigger transfers, immutable objects, and aggressively parallel operations where bandwidth is often the real constraint. This was explicitly inspired…
Mar 2026 · github.com · its alternatives →
- 8
Query SQLite files in S3 using s3fs. Contribute to litements/s3sqlite development by creating an account on GitHub.
2022 · github.com · its alternatives →
- 9
Hi, most people (hopefully) have local backups. However, when that backup fails, it is good to have a backup stored somewhere off-site. In the old days you would ship physical drives/tapes, which is cumbersome, costly, and slow. With fast upload speeds, it is now possible to upload your data to the cloud. I have found S3 Glacier Deep Archive to be a great solution for this: - It is very cheap ($1/TB/month for US region) - Very reliable (99.999999999% data durability, data spread over 3 Availability Zones) However, usability out of the box is not that great, I'm not aware of…
2022 · github.com · its alternatives →
- 10
StoreFS▲1StoreFS is a distributed S3-compatible object storage system
Aug 2026 · github.com · its alternatives →
- 11
Lambda functions over S3 objects with concurrency control (each, map, reduce, filter) - littlstar/s3-lambda
2017 · github.com · its alternatives →
- 12
Hey HN, AWS S3 Express One Zone promises improved latency and throughput but comes with several limitations including only being available in one availability zone and the directory bucket structure. We developed Accelerated Cloud Storage to offer an object storage system with high performance (up to 10X better than S3 Express One Zone in latency and throughput), strong consistency and global availability that scales and moves data based on demand. The service is accessible through an S3 compatible Go/Python SDK. ACS has enterprise-grade security compliance (SOC 2 Type 2 pending), and a…
2025 · acceleratedcloudstorage.com · its alternatives →
- 13
An incredibly simple, open-source alternative to Loom that only requires S3-compatible storage—no servers needed - goshops-com/clipshare
2024 · github.com · its alternatives →
- 14
Blober.io▲104Safely transfer files between AWS S3, Google Drive, Azure Blob, GoPro Cloud, Backblaze B2, Dropbox and more. Lifetime license, no subscription fees. Desktop app for Mac, Windows & Linux.
Jan 2026 · blober.io · its alternatives →
- 15
Over the past few months, we've been building Prism; a fast, developer-first observability UI that's deeply integrated with our open-source database, Parseable. Prism is designed for engineers who debug distributed systems, sometimes at odd hours, and need answers right now, without having to deal with five different tools. Backstory: We spoke to dozens of observability practitioners in large enterprises. Across the board, we heard two things: (1)The RoI on observability tools is hard to justify. (2)OSS leads to tool sprawl, metrics in Grafana, logs in ELK, traces… somewhere. We wanted a…
2022 · parseable.com · its alternatives →
- 16CM
Hello HN! We’re Dan and Vaughan, based in Cambridge, UK. We recently launched cunoFS, a filesystem for fast, POSIX object storage access. Yes, we’ve heard that “Object Storage is just not suitable for POSIX workloads” or that “workloads should be rewritten to natively support S3”. But what if it could be? And often much faster than S3-native apps? We’ve worked hard to make this possible, without the shortcomings of other approaches. Summary here: - Run (unmodified) applications with S3/AZ/GCP or “S3 compatible” storage, for example: ls s3:// az://…
2024 · cuno.io · its alternatives →
- 17
Scalable high-performance shared filesystem for S3-compatible object stores and Azure Blob Storage. Faster than Amazon EFS, SoftNAS and GlusterFS. For Linux, EC2, MacOS, as well as SMB and NFS exports. Great for machine learning, cluster computation, simulation, backup and DR, Kubernetes and web ser
2015 · objectivefs.com · its alternatives →
- 18AS
Hey everyone, I’m Hunter, the founder of Archil. Archil is transforming object storage, like Amazon S3, into infinite, local file systems that provide instant access to massive data sets. Last year, we launched Archil’s NFS-based product publicly on Hacker News (https://news.ycombinator.com/item?id=42174204), and we were absolutely thrilled to see the response of this community. Since our last launch, we took a 10 month company-wide bet to build our own, custom storage protocol to deliver true, local-like performance to cloud instances – by behaving closer to a block storage…
2025 · its alternatives →
- 19
RipDB▲65Fast, decentralized key-value Store for web3 builders
2022 · zdenham.github.io · its alternatives →
- 20
S2 was on HN for our intro blog post a year ago (https://news.ycombinator.com/item?id=42480105). S2 started out as a serverless API — think S3, but for streams. The idea of streams as a cloud storage primitive resonated with a lot of folks, but not having an open source option was a sticking point for adoption – especially from projects that were themselves open source! So we decided to build it: https://github.com/s2-streamstore/s2 s2-lite is MIT-licensed, written in Rust, and uses SlateDB (https://slatedb.io) as its storage engine. SlateDB is an…
Jan 2026 · github.com · its alternatives →
- 21
Filebase▲18Learn how to use thirdweb and Filebase to deploy NFT collections onto IPFS, ensuring decentralized storage at a fraction of the cost.
Jun 2026 · filebase.com · its alternatives →
- 22
Ultra-high performance distributed storage system in the AI era. Powered by Fractal ART engine, Rust-native, io_uring, with multi-protocol (S3 object storage, POSIX FS, ...) - fractalbits-labs/fractalbits
Dec 2025 · github.com · its alternatives →
- 23
MinIO is a high-performance, S3 compatible object store, open sourced under GNU AGPLv3 license. - minio/minio
2016 · github.com · its alternatives →
- 24
I previously introduced WinCse on Hacker News (original post: https://news.ycombinator.com/item?id=43947599). At the time, it only supported AWS S3, but this update adds compatibility with GCP, OCI, and more object storage providers! Object storages tested for compatibility: - AWS S3 - Google Cloud Storage - OCI Object Storage - Wasabi Hot Cloud Storage - Cloudflare R2 - Backblaze B2 - Storj DCS - IDrive e2 With WinCse, you can access and manage object storage directly from Windows Explorer as if it were local files. If you encounter any bugs, please report them on GitHub. I…
2025 · github.com · its alternatives →
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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 →