The best free alternative to Inkscape is Vectornator. If that doesn't suit you, our users have ranked more than 100 alternatives to Inkscape and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Inkscape are Gravit Designer (Freemium), LibreOffice - Draw (Free, Open Source), Canva (Freemium) and Vectr (Free).
The Vecteezy Editor is a free SVG editor designed to allow anyone to quickly and easily create beautiful graphics directly in the browser. This tool is built into the largest database of free vector graphics on the internet.
LaTeXDraw is a graphical drawing editor for LaTeX. LaTeXDraw can be used to 1) generate PSTricks code; 2) directly create PDF or PS pictures. LaTeXDraw is developed in Java and thus runs on top of Linux, Windows, and Mac OS X.
Ipe is a drawing editor for creating figures in PDF or (encapsulated) Postscript format. It supports making small figures for inclusion into LaTeX-documents as well as making multi-page PDF presentations that can be shown on-line with Acrobat Reader.
Kleki is a multi-platform web app for painting and editing. It features: 4 different brushes; pressure sensitivity for Wacom tablets; up to 8 layers; numerous filters with real-time preview; import to PSD, PNG, JPEG; export to JPEG and PNG; upload to imgur.com; local storage.