Software
Cross Platform
Blender – open-source 3D Modeling tool
Krita – open-source painting app, ~90% replacement for photoshop
Etcher – writes img/iso/zip images to sd/flash drives easily
Figma– web-based vector editor like sketch, free version is very usable.
Greenshot – screenshot replacement, I know their are native OS version but this adds some nice features to those by just hit printscreen key and lets you select a portion of the screen and then what to do with it – copy to clipboard, edit, save as jpg or png, etc. (mac and window, use the same key on both)
jadx (win/linux/mac)- DEX to Java Android Decompiler
OpenSCAD – programming based CAD software for adaptive 3D models often used in customizable 3D printing models
SketchUp 2017 – last free desktop version that can export in 3D printer friendly formats
LaserGBL – opensource control software for low cost laser cutters
OpenJDK – Java is a mess, if you have Oracle Java JDK/JSR installed, uninstall it and install this one instead
Ocenaudio – Free alternative to Adobe Audition – great waveform with spectrum charting, easy to use EQ, compression, normalization
Map Engine Lite – Simple tool to annotate and share google maps
Windows
4K Video Downloader – download youtube video files
Colasoft Mac Scanner – finds all computers on your LAN
Core Temp – monitors your CPU temp
CPU-Z
DiskGenius
DaVinci Resolve
flux – better screen dimming/blue light filtering app than what windows night light does.
Geekbench – nice cross platform tool to get a single score to compare how a computer compares to another one.
GPU-Z
HD Tune
ImageGlass – image preview replacement, much faster, more formats
Lunacy – free windows alternative to Sketch
MakeMKV – dvd/blueray to mkv
OBS Studio –
Ocenaudio – better audio editor than audacity
Polarr – Adobe Lightroom replacement, free version or pro for $29/yr
Postman
qBittorrent
Radeon RAMDisk
S3 Browser – tool to upload/download files in Amazon S3 buckets
SVG Explorer Extension – renders SVG thumbnails
WinSCP –
Windows Terminal –
Wox – simple mac style launcher/search by pressing alt + space
Genome Compiler – free
SnapGene Viewer – free plasmid mapping, primer designer
MacOS
Pixelmator Pro – amazing photoshop replacement with one time cost of $50
Blackmagic Disk Speed Test – tests read/write speed of disk drives
Mac Fan Control – change your fan curves to run the fans sooner to hopefully stop your machine from getting into full fan because its overheating
Hot – see the cpu throttle
Stockfolio – ($) good stock charts with indicators
Audio Hijack – ($) can capture sound from individual app and do realtime DSP sound processing
Magnet – ($) divides your screen into grid zones, great for 4K screens
Vector 3 – ($) sound editor (mac only)
Packet Peeper – easier to install alternative to wireshark for mac
Linux Command Line
ncdu – ncurses disk usage tool
glances – top/htop replacement
tree
7za
tldr
bd_info / bluray_info – sudo apt install libbluray-bin