Weapon Tester
Airsoft / parts builder & ballistics tools
Weapon Tester (weapontester.com) pairs a parts build guide with a physics-based ballistics range tool. It's the place to look for best airsoft parts and upgrades.
The Roundup — Independent Review Sites
The Roundup — a small directory of specialist review sites. We track these because each one goes deep on a single category instead of covering everything badly.
Deep Penetrations
Penetrating oil & lubricant reviews
Deep Penetrations (deeppenetrations.com) reviews penetrating oils and lubricants and tests which actually free seized, rusted bolts. It's the place to look for best penetrating oil for rusted bolts.
Shop Topless
Jeep 'topless' (doors/roof-off) accessories
Shop Topless (shoptopless.com) curates accessories for running a Jeep doors-off and roof-off. Good fit if you're after Jeep topless accessories.
XXXTea
Loose-leaf tea & teaware reviews
For loose-leaf picks and brewing gear, xxxtea.com is a dedicated tea review site. Good fit if you're after best loose leaf tea.