
Start with the biggest, and work your way down.
I haven't had any crashes for 29+ game hours. I'm using:
Litcube's Phanon Corporation
Litcube's Revelation
Litcube's Bounce
Litcube's Fixed Missions
Litcube's Saturn Complex Hub
Litcube's Missile Boat Addon
Litcube's Dock Ware Manager
Litcube's UT Rewrite
Litcube's Turrets Rewrite
Litcube's Missile Rebalance
Litcube's Shit Mix Ship Mod
Litcube's Freighter
Litcube's Supply Manager
Litcube's Ship Outfit Template System
Litcube's Military Logistics Command Center
Litcube's Jump Beacon
Litcube's Jump Quantifier
Litcube's Emergency Jump
Litcube's Emergency Retreat Drive
Litcube's Global Renamer
Litcube's Dock Auto Renamer
Litcube's Economic Readouts
Litcube's Homebase Auto-Set
Litcube's AL Job Engine
Litcube's Notoriety Maintenance
Litcube's Fixed Fight Command
Litcube's Fight Rank Ship Killed Part Spawner
Litcube's Static Flying Wares
Litcube's G19 Plug-in
Litcube's Fix Stalled Landings
Litcube's Satellite Deployment
Litcube's Auction cargo stations
Litcube's Auction station
Litcube's Purchase Multi-Factories
Litcube's Vend Ware System
Litcube's Colour Ship Name
Litcube's Drop Station
Litcube's Deploy Help Beacon
Litcube's Get Refuel Command
Litcube's Map Sectors
Litcube's OOS Laser Switch System
Litcube's Quick Suttle Services
Litcube's Sell Bulk Equipment System
Litcube's Scan Asteroids
Litcube's Station Information Name System
Litcube's Strip Ship Command
Litcube's Station Agent (w/ Reports)
Litcube's Tractor Asteroid
Litcube's Station Lock Manager (for all traders)
Litcube's Valid Sector Management System (for all traders)
Litcube's Earth Protection rewrite
Litcube's Remote System Control
Litcube's Targeting Commands
Litcube's CWP
Litcube's Safe Path Finder
Litcube's Improved Generic Trade Commands
Litcube's Encapsulated Error Code System
Litcube's Playership Turret Config Keys
Litcube's QuickMenu Libraries
TrixX's HUD
Mizuchi's Pretty Picture
This probably qualifies for a modified game.