Terrastruct
draw.io
IcePanel
Structurizr
LucidChart
Isoflow
Plectica
Diagrams for Mac
RepDB
Terrastruct is a diagramming tool specialized for complex systems, such as your organization's software architecture or the domain your business operates in.
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.
Terrastruct 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, Terrastruct seems to be more popular. It has been mentiond 15 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.
i'm building a diagramming tool (https://terrastruct.com) and still umm and ah b/t it. I'm kind of waiting for webgpu to reach 95+% browser support before switching though. If I do all the work of switching, SVG better not get gpu/hardware-acceleration support the next day. - Source: Hacker News / about 3 years ago
D2 from Terrastruct is a diagram scripting language that turns text into diagrams. - Source: dev.to / over 3 years ago
Terrastruct.com โ Online diagram maker specifically for software architecture. Free tier up to 4 layers per diagram. - Source: dev.to / almost 4 years ago
Thank you! Yeah, you can play with it on https://terrastruct.com. Apologies that it requires an account right now, it'll have a playground that doesn't require an account soon. Source: about 4 years ago
I'm a big fan of Terrastruct (https://terrastruct.com/). They focus on building great software for visualizing complex software architecture. Their secret sauce is this idea of attention where they allow you to zoom in and out so you can get the 10 foot view or 10,000 foot view, whatever you find most useful. - Source: Hacker News / about 4 years ago
draw.io - Online diagramming application
IcePanel - Collaborative modelling and diagramming tool based on the C4 model. Software architecture design made fun! ๐ง
Structurizr - Structurizr is a workspace editor that creates software architecture diagrams and documentation based on the C4 model.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Isoflow - Create beautiful cloud diagrams in minutes
Plectica - Easily diagram anything, together