Developer & DevOps for Student

16 developer & devops tools hand-picked for Student.

Number Base Converter

Number base converter — binary, octal, decimal, hex, and any base 2-36. Bitwise too.
Chinese Idiom Search

800+ everyday chengyu — pinyin, origin, usage.
Collatz Conjecture Calculator

Enter any positive integer, watch 3n+1 run to 1 — full hailstone sequence, stopping time, and peak, exact via BigInt
CSV Transposer

Flip CSV rows and columns from uploaded files or pasted data, with ragged-row handling and local output.
Fibonacci Generator

First N terms, a range, or the nth value, with running sum and golden-ratio convergence, exact via BigInt, all in your browser
Gray Code Converter

Decimal, binary and Gray code three ways, gray = n^(n>>1), one click each side, all in your browser
Hamming Distance Calculator

Count the differing positions between two equal-length inputs, in characters, binary bits or integer XOR, all in your browser
Markdown Cheat Sheet

Markdown syntax cheat sheet — every rule with live preview side by side, GFM + flavors.
Markdown Link Extractor

Upload Markdown and extract inline links, reference links, images, and bare URLs into a local CSV.
Password Strength Checker

Check password strength — entropy, time-to-crack, breach pattern check (offline).
Python Cheatsheet

Python cheat sheet — 100+ idiomatic Python snippets for string, list, dict, file, async, with real examples.
Regex Cheatsheet

Interactive regex cheat sheet — quick reference for every flavor (JS, Python, PCRE).
SQL Cheatsheet

SQL cheat sheet — 100+ statements covering SELECT, JOIN, window functions, indexing, MySQL/PostgreSQL/SQLite differences.
Text File Cleaner

Upload a text file and remove BOM, null bytes, trailing spaces, and excessive final blank lines locally.
Text File Line Ending Converter

Upload or paste text and convert CRLF, CR, and LF endings to a consistent LF or CRLF output locally.
Two's Complement Converter

Signed decimal to two's complement binary and hex at 4, 8, 16, 32, 64 bits, with sign-magnitude and one's-complement steps, runs in your browser