Utilities & Online Tools

Select email delivery or an account-free file link

Algebra solving with topic examples and practice

PDF editing, OCR, forms, and page organization

Choose temporary delivery limits to match a file handover

Audio conversion, disc extraction, and console workflows

Batch audio conversion through several encoder backends

Create and revise PDFs across desktop and web

Mobile Wi-Fi and network information in one utility family

Preset-based media conversion with adjustable encoder settings

A Windows reader for PDFs, ebooks, and comics

Audio conversion with effects and filters

Online PDF conversion with a Windows OCR companion

A Mac client focused on FTP and SFTP file transfers

Render, inspect, extract, and restructure PDFs from a terminal

A compact unit converter with adjustable displayed precision

Inspect code points, normalization and string differences

Strip source markup while preserving paragraphs

Overlay astronomical catalog data on sky images

Notebook-based symbolic and numerical computation

Physical calculations with tracked units and exact quantities

Analyze word use with dictionaries and text measures

Create and deliver documents from templates and connected data

Audio conversion with ReplayGain and CD-ripping tools

Residential building-envelope calculation reports