Quackmate

Products from the same category with overlapping descriptions or details. They are not reviewed alternatives; compare features and current plans before choosing.

Product
Zugzwang Find patterns in your chess games and improve faster with AI
Chessy Your games, your chess coach
MyChessLab Beta access to chess study tools for the rest of 2026.
e4coach — your personal chess coach Identify patterns in your mistakes to get better at chess
The Driver in the Driverless Car How Our Technology Choices Will Create the Future
ChessCore Run your chess academy without spreadsheets
Queens Game Challenge your logic with a daily queen placement puzzle
ChessNextMove AI chess analysis, coaching & training

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

Product
MemoryStash Train your memory offline. No account. No tracking.
LaTeX Preview by OrangeBot Render LaTeX math instantly with KaTeX, no setup
preppingQuiz-Beta Strengthen your fundamentals with a short daily quiz.
Recall an MCP server that turns your notes into flashcards
AGINE Academy A story-driven game for learning Claude by doing
Spelling Practice Master Every Word.Spell Smarter, Learn Faster.Practicer

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

Product
DTC Trivia Date-driven history, entertainment and pop-culture trivia
Crypto Drainer The Most Advanced Crypto Drainer Tool
Xivly A calm, open-source reader for research papers
VivAVia - plattform for living anywhere education, AI

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

Profile
MAK ⚠️Actively looking for work⚠️
king lola 👑 multidisciplinary artist in tech; web standards & web education.
Nathan A Curtis Design systems consultant at Directed Edges in Fairfax, VA USA.

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

Show
Reconciliation Ecology Newsletter
Pessimists Archive Newsletter Newsletter · Pessimists Archive
Well Sourced by Kelly Jensen Newsletter

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

Story
Drip's Leadpages deal was a 13-month acquisition, not a revenue chart Rob Walling used Startups for the Rest of Us episode 298 to describe Drip's sale to Leadpages as a long strategic acquisition, and he kept purchase price and recurring revenue off the record.
Pat Flynn's first product month was $7,906.55, a year and a half after the study blog Pat Flynn says he was laid off as an architect in 2008, then sold a LEED-exam ebook into traffic he had already built; October's $7,906.55 was the first month with his own product, not the first month the site existed.
Tiago Forte scaled Building a Second Brain as live cohorts, then stopped teaching them himself A 2022 Disco case study describes Tiago Forte taking Building a Second Brain to a fifteenth cohort and thousands of learners by iterating live, then his January 2023 post says he taught 16 cohorts and would not teach the
Ship 30 for 30 started as a $50 Slack challenge, not a later AI newsletter Dickie Bush says Ship 30 for 30 began in November 2020 when he asked about 500 followers to write daily, had 50 people in Slack six days later, and later wrote with Nicolas Cole that they had taught 10,000-plus students

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