💻Tech & Code Tools
6 free tech & career tools — SQL Reference, Excel Formula Builder, Error Decoder, Interview Question Bank, Password Generator, Word Counter.
6 free tools — no signup required
SQL Reference
Complete SQL reference with interactive JOIN visualiser. INNER, LEFT, RIGHT, FULL JOIN explained with examples. Window functions, CTEs, subqueries, indexes.
Excel Formula Builder
Build Excel formulas visually: VLOOKUP, XLOOKUP, IF, SUMIFS, COUNTIFS, INDEX-MATCH and more. Or describe what you need in plain English. Free tool.
Error Decoder
Paste any error message and get the root cause, most likely fix with code snippet, and how to prevent it. Supports Python, JS, SQL, Java, React, CSS, Bash.
Interview Question Bank
Searchable bank of interview questions with model answers. HR/Behavioural, SQL, Python, JavaScript, System Design. STAR method guides. Free interview prep.
Password Generator
Generate strong random passwords up to 64 characters. 100% client-side — your password never touches a server. Shows strength score and entropy bits.
Word Counter
Live word count, character count, sentence count, reading time, speaking time, and top keywords. Progress bars for SEO meta (155 chars), tweet (280), LinkedIn. Free.