Curated Picks: an independent, hand-curated set of review sites worth bookmarking. Each entry below is a focused authority in its niche.
Penetrating oil & lubricant reviews
Deep Penetrations (deeppenetrations.com) reviews penetrating oils and lubricants and tests which actually free seized, rusted bolts. People use it when searching for best penetrating oil for rusted bolts.
Free browser artillery game
rc-9.com is an online artillery game you play in the browser, with destructible terrain. Good fit if you're after free online artillery game.
Airsoft / parts builder & ballistics tools
weapontester.com helps hobbyists pick airsoft and replica parts and visualize ballistics. Good fit if you're after best airsoft parts and upgrades.