Headscale
TailScale
NetBird
Netmaker
ZeroTier
WireGuard
zrok
ngrok
RepDB
RepDB is a one-time-purchase exercise dataset for developers building fitness and workout apps โ not a subscription, not a rate-limited API. You download the data once and own it: JSON (and SQLite on the higher tier), WebP images, and full EN/DE/ES translations, with no per-request billing and no dependency on our servers staying up.
A free tier includes 400 exercises with flat-style 512ร512 images, attribution-licensed for commercial in-app use. The Starter tier ($199) adds the full catalog in classic white-background style. Standard ($399) adds transparent 1024px images, looping animations, exercise relations (similar/progressions/regressions), workout templates, and embeddings โ exclusive to that tier.
Every exercise includes muscle-group highlighting, equipment/muscle icons, MET values, and safety/goal tags. Compared to GIF- or JPG-based competitor APIs, RepDB images are transparent WebP with no watermarks, so they drop into any app UI without a white box around them.
Headscale RepDBRepDB's answer:
RepDB is sold as a one-time download, not a metered API โ you own the JSON/SQLite data and WebP images outright, with no rate limits, no per-request billing, and no risk of the vendor cutting off access. It's also the only dataset in this space with EN/DE/ES translations, transparent (alpha-channel) images with no watermark, muscle-group highlighting, safety/goal tags, and looping animations on the higher tier.
RepDB's answer:
RepDB grew out of a consumer workout app its creator was building solo. Sourcing exercise images and data meant either paying for a subscription API with usage caps and no caching rights, or producing everything from scratch. The illustrated, multi-language dataset was built for us first, then split out as its own product once it became clear other indie developers had the same problem and preferred to buy the data outright rather than rent it through an API.
RepDB's answer:
Most alternatives are subscription APIs โ you pay monthly, you're capped on requests, and ExerciseDB's terms of use explicitly forbid caching or storing the data at all, so every image render is a live paid API call. RepDB is the opposite: pay once, download the files, self-host with zero ongoing dependency. It's also the only option offering true DE/ES localization and transparent images instead of a white box behind every exercise.
RepDB's answer:
Solo developers and small teams building fitness or workout-tracking apps (iOS, Android, web) who need licensed exercise images and structured exercise data, but don't want to build their own media pipeline or depend on a rate-limited third-party API.
Based on our record, Headscale seems to be more popular. It has been mentiond 60 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
> Did you try Headscale? https://github.com/juanfont/headscale or netbird? Am aware of them but IIRC they are both unaudited which kind of brings us back to square one ? We would still end up running them at arms-length as we do with Tailscale at the moment. Also isn't Headscale server-side only ? - Source: Hacker News / 15 days ago
Did you try Headscale? https://github.com/juanfont/headscale or netbird? The latter has been great for me. - Source: Hacker News / 15 days ago
You'll need a config.yaml (server URL, IP ranges, DERP settings) โ grab the template from the Headscale repo. Point your Tailscale clients at your server with tailscale up --login-server=https://your-domain, and you have a private mesh with nobody else in the loop. - Source: dev.to / about 1 month ago
Headscale is a self-hosted, open-source implementation of the Tailscale control plane. Same WireGuard mesh, same clients โ but your data stays on your infrastructure. If you're already running k3s with ArgoCD, adding Headscale is straightforward. - Source: dev.to / about 2 months ago
Headscale is the open-source implementation of the Tailscale coordination server. Self-hosting it gives you one thing Tailscale's SaaS doesn't: control over the DERP map. - Source: dev.to / about 2 months ago
TailScale - Private networks made easy Connect all your devices using WireGuard, without the hassle. Tailscale makes it as easy as installing an app and signing in.
NetBird - Connect your devices into a single secure private WireGuardยฎ-based mesh network with SSO/MFA and manage access with just a few clicks.
Netmaker - Netmaker automates mesh VPN's and software-defined networks using WireGuard.
ZeroTier - Extremely simple P2P Encrypted VPN
WireGuard - Fast, Modern, Secure VPN Tunnel
zrok - Next-generation sharing platform built on top of OpenZiti
