DevToolbox

Reviewed matches are labeled. Other suggestions come from a shared subcategory, use case, source listing or the same category. Compare features and current plans before choosing.

Product
DeveloperToolsKit 35+ free dev tools – JSON, Regex, JWT & more, no ads.
ArrayCat Convert any strings to array with ArrayCat
dotMock (https://mock.new) Spin up realistic mock APIs in seconds so you can build, tes
utilsfor.dev Dev tools
API_TESTER Effortless API testing, directly from your macOS menu bar
BLACKBOX.AI Code smarter, faster — powered by AI.
EntelligenceAI VSCode Extension Review code in your IDE, pre-merge.
fjorj Expert Knowledge API for AI Agents

Selected by category and available use-case details. A topic match does not establish equivalent features.

Product
Json Web Tools 68 free JSON tools — format, convert, validate, no login
runlocal Expose localhost to the internet with one command
Runlater Queue delayed tasks and schedule recurring jobs with ease
PeekAPI Drop-in API analytics middleware for 7 languages, zero depen
IP Ninja Lightning-fast IP and domain intelligence, parsed to perfect
GovernsAI AI OS with unified auth, memory, and PII guard across models

Added to this directory in the past 30 days. Dates refer to the directory listing, not the product launch.

Product
Uploadless Process files directly in your browser with no uploads, no sign-up, and complete privacy.
Forgex Vibe coding platform for backend orchestration layer
Klevo Record a demo video of your web app by asking Claude, and get an MP4 back Klevo is an MCP server for demo videos.
Palumb Notification orchestration as code in the EU

Profiles grouped by topic. This does not confirm an offer, availability or a connection to this profile.

Profile
Robert C. Martin American software consultant (b. 1952)
Florin Pop Programmer from Romania (Freelance)
Nicholas C. Zakas American computer scientist

Shows and channels grouped by topic. A recommendation does not mean this profile was featured or endorsed.

Show
Dmytro’s Substack Newsletter · Dmytro Krasun
TechnoBizzVault Newsletter
Tech World With Milan Newsletter Newsletter · Dr Milan Milanović

Retold founder accounts from startups in the same category, each linked to the original.

Story
Waydev found its buyer by changing who its engineering data was meant to help Alex Circei and Valentin Buzea turned a poorly received management tool into engineering analytics software. Customer feedback, a serious security incident, and the rise of AI coding each forced a different change in the
How Victoria Duben Turned an Ad Production Bottleneck Into Viewst Victoria Duben used the limits of an earlier advertising venture to identify a different opportunity: helping creative teams produce and approve many versions of an ad. Viewst evolved from early lifetime deals toward rec
U UruIT's Path from a Small Uruguayan Team to a Wider Technology Group Marcelo Lopez and Iang Yim built UruIT around experienced developers, close client collaboration and access to the US market. The business expanded into Colombia, learned from its own product experiments and eventually b
Thunkable: Turning an Educational Experiment into an App-Building Business Arun Saigal and WeiHua Li saw people using visual programming for more than classroom exercises. Thunkable grew from that demand into a commercial platform, adding professional publishing, collaboration, and eventually A

Subcategories in the same part of the directory, with the number of listed products.