C# Recipes vs ergosum

An everyday C# reference, from strings and collections to classes, LINQ and async work. Most examples have comments in the code and run right in the app. • 26 sections: basic types, arrays and collections, classes and structs, interfaces and generics, LINQ, functions and lambdas, async and threading, exception handling, regular expressions, files, serialization, design patterns. • Run in the app: the example actually runs and the output appears under the code. Needs an internet connection. • What changed in new versions: 11 sections from C# 2.0 to 12.0, with the old and the new code side by side. • Keyword and function reference: over 400 articles, open in full, with no daily limit. • SQL alongside: over 200 queries against a live practice database (JOIN, GROUP BY, subqueries, data types). • Edit examples and add your own; they stay in the app and are always at hand. • Search looks inside the code itself, not just the titles: remember a fragment and you will find the example. • Everything except running works offline. No account needed. WHAT THE FREE VERSION INCLUDES 12 runs and 12 edits a day; the counter resets every morning. The keyword reference is open without limits. Up to 5 examples of your own. The full version unlocks every example, lifts the daily limits and raises the run limit to 30 a day. One purchase, no subscription. Examples are drawn from professional sources and verified by running them. Built by a developer for developers. In active development since 2015.

Ergosum is your second brain. Write notes the way you would in Notion — and an AI memory layer remembers everything, so your knowledge is always one question away. Notes that become memory Write in a clean block editor — text, bullets, todos, markdown. Every page you create joins your personal knowledge base. AI that actually remembers you Most AI chats forget the moment you close them. Ergosum's AI carries context across every conversation — it knows what you've written, what you're working on, and what you've decided. Ask "what did I think about X last month?" and get an answer. Recall, not search Stop hunting through folders. Ask in plain language and get back the exact note, idea, or decision you're looking for. Structured when you want it, fluid when you don't Nested pages, workspaces, private and shared spaces. Use it like Notion when you need structure. Let the AI do the organizing when you don't. Built for thinkers Students, founders, researchers, writers — anyone whose work lives in their notes. Light, dark, and Catppuccin themes. Page history. Sharing. Cogito, ergo sum. Your thoughts, remembered. Terms of Use (EULA): https://ergosum.cc/terms