The other apps on the lists Estimate Rocket sits on, in ThatPainter's order.
OPS suits service businesses and trades crews that need to coordinate jobs, schedules, client details, estimates and field documentation. Its offline mode and task-based crew permissions may be useful for teams working at job sites with unreliable cell service.
It suits residential or commercial painting contractors, cabinet refinishers, epoxy floor companies and other listed trade businesses, from a single crew to companies with up to 250 employees. It is also relevant to franchises needing estimating, scheduling, payments and crew coordination.
Free plan PaintClarity is aimed at professional painters and painting contractors, including solo painters and businesses managing several crews. It suits businesses prepared to run it on their own self-hosted WordPress site.
DripJobs suits painting and home-service contractors who want to manage leads, estimates, proposals, scheduling, crews, and payments in one CRM. Its automated follow-ups and mobile apps may also suit teams that communicate with customers and manage jobs while away from a desktop.
Painter's Log is for painting contractors who need estimates, crew timekeeping, job costing and invoicing in one back-office product. Its room-by-room paint records and field tools suit businesses managing crews and tracking actual material and labor costs during jobs.
Free plan It suits residential or commercial painting contractors who need to estimate materials and send quotes from a job site. Contractors tracking customers, quote performance, or job costs may also find its listed tools relevant.
Free plan It is for painting contractors managing estimates, materials, crews, project updates, customer follow-up, and invoices. Homeowners choosing paint for a single DIY project are not its stated audience.
PaintWiser suits painting contractors who want estimates based on their own rates and paint systems, alongside quote approval, scheduling, and invoicing. The Crew plan may suit teams that need estimator access to assigned customers and jobs.
Free plan 
GoBuild suits general contractors, home builders, remodelers, and specialty trades that want job schedules, field activity, client communication, and finances in one workspace. Its field app and client tools may be useful for teams coordinating crews, subcontractors, and homeowners across active jobs.
PaintScout suits painting contractors who want estimates, proposals, customer communication and payment collection in one web platform. Contractors who also need job management, scheduling and team task management can add Operations.
PaintOps suits solo painters and small painting companies, particularly crews of roughly 1–10 people that want estimating, scheduling, invoicing and job costing in one web service. Solo is for one user; Team adds CRM and booking, multi-crew scheduling, time tracking, job costing and reporting.
Pro PaintOps suits residential painting contractors who need estimating, scheduling, crew coordination, and homeowner follow-ups in a web tool. It may fit teams choosing among plans with different seat, crew, and storage allowances.
It suits service businesses such as painting, handyman and general contracting teams that need scheduling, estimates and payment tools. Offline mobile access may help technicians who need to update job information without connectivity.
Traddie suits UK sole traders and small trade teams who want to manage quotes, jobs and invoices from Android, iOS or the web. Larger trade businesses and contractors can consider its Enterprise plan, which includes unlimited team members and a dedicated account manager.
QuickQuote suits solo painters, small crews, and growing painting shops that want estimates, contracts, and job scheduling in one web platform. It is especially relevant to contractors who want to use room photos for measurements and let customers approve or sign through a browser link.
Tryoup suits UK trade and service businesses that need to coordinate calls, jobs, crews, estimates, stock and invoicing. Its listed trade audiences include plumbers, electricians, locksmiths, heating engineers, cleaning firms and pest control businesses.