I love software and non software tools that help me in some way. Most tools I use & like are mentioned appropriately in other parts of the wiki.
Gravatar - Attach an image to an email and websites supporting Gravatar will simply pick up the image you specified.
Calendly - Schedule meetings.
Styleguide - Tool to make creating and maintaining style guides easy.
UFree - Sort out what day to meet.
Updwn - See what everybody thinks.
Leetchi - Online money pot for group gifting & personal fundraising.
Paddle - Checkout, subscriptions, licenses, promotions and analytics that work well together.
Git.io - URL shortener by GitHub.
Sourcegraph - Code search and intelligence, self-hosted and scalable.
Observable - Discover insights faster and communicate more effectively with interactive notebooks for data analysis, visualization, and exploration.
Carbon - Create and share beautiful images of your source code.
livegrep - Tool, partially inspired by Google Code Search, for interactive regex search of ~gigabyte-scale source repositories.
webhook - Lightweight incoming webhook server to run shell commands.
Canny - Track feedback to build better products.
EditorConfig - Helps maintain consistent coding styles for multiple developers working on the same project across various editors and IDEs.
Apprise - Push Notifications that work with just about every platform.
Bloaty - Size profiler for binaries.
mdck - Reports broken links found within md files.
Coverr - Beautiful, free videos for your homepage.
Loom - New kind of work communication tool that helps you get your message across through instantly shareable videos.
Habitat - Modern applications with built-in automation.
Toodles - Project management directly from the TODO's in your codebase.
Speedscope - Fast, interactive web-based viewer for performance profiles.
Dependabot - Creates pull requests to keep your dependencies secure and up-to-date.
imgproxy - Fast and secure standalone server for resizing and converting remote images.
Loki - Like Prometheus, but for logs.
HCL - HashiCorp configuration language.
Buttondown - Easiest way to run your newsletter in markdown.
How many people are around - Count the number of people around you 👨👨👦 by monitoring wifi signals 📡.
Confluent - Streaming platform built by the original creators of Apache Kafka.
JournalBook - Private, offline-first personal journal.
AfterClass - New kind of document for futuristic teams.
WriteFreely - Simple, federated blogging platform. Written in Go.
Snap.as - Permanent home for your photos.
Jsonnet - Data templating language.
fastmod - Fast partial replacement for the codemod tool.
showthedocs - Documentation browser that finds the relevant docs for your code.
hack.chat - Minimal, distraction-free chat application.
Seafile - Enterprise file hosting platform with high reliability and performance.
Outline - Read & annotate without distractions.
HelloSign - Most Powerful Platform for Business Agreements.
Catch - Taxes, retirement, health insurance and more — built to work together like they always should have.
Etcher - Flash OS images to SD cards & USB drives, safely and easily.
gosu - Simple Go-based setuid+setgid+setgroups+exec.
parinfer-rust - Infer parentheses for Clojure, Lisp and Scheme.
Glide - Create a mobile app from a Google Sheet in 5 minutes, for free.
Changemap - Involve users and manage features from suggestion to changelog.
wallabag - Self hostable application for saving web pages: Save and classify articles. Read them later. Freely.
Project Iris - Completely decentralized cloud messaging.
yq - Lightweight and portable command-line YAML processor.
Replies - Helps to reduce the effort required to process customer enquiries to a minimum. Numerous functions optimize the entire process - from receiving to resolving the request.
Beehive - Flexible event/agent & automation system with lots of bees.
mrm - Command line tool to help you keep configuration (package.json, .gitignore, .eslintrc, etc.) of your open source projects in sync.
Dark - Holistic programming language, structured editor, and infrastructure, for building backend web services.
Checkly - Monitor the performance and correctness of your API endpoints & vital site transactions from a single, simple dashboard.
Lattice - Performance management and employee engagement.
Memex - Privacy focused extension to annotate, search and organize what you've seen online.
Narrative - Builds brands, websites and products for growth-minded companies.
Forethought - Agatha, A.I. for Customer Support.
Fixmie - Automated code fixes.
Fabric - Platform that helps your mobile team build better apps, understand your users, and grow your business.
Squoosh - Make images smaller using best-in-class codecs, right in the browser.
Mathigon - Smartest textbook in the world.
Versus - Discover more than 7 million comparisons. Smartphones, Cities, Apps, Universities and much more.
envinfo - Generate a report about your development environment for debugging and issue reporting.
Sheetson - Instantly turn any Google Sheet into RESTful API.
Are.na - Save content, create collections, and connect ideas with other people.
Otter - Generate rich notes for meetings, interviews, lectures, and other important voice conversations.
Tettra - Knowledge management system for high-performance teams.
UIBot - Experiment on how far one could automate the generation of visual designs, what kinds of advantages it would lead to and what issues one would face.
Scratch your own itch.
Stand on the shoulders of giants.
Solve for the 80 % use case.
Make it easy to adopt/delete.