Open-source alternatives starting with R 97 in total.
- Rackspace Email alternatives
- Rafay alternatives
- Ragic alternatives
- Railway alternatives
- Raindrop.io alternatives
- Rally Software alternatives
- Ramco alternatives
- Ranorex alternatives
- Rapid7 alternatives
- Rapyd alternatives
- Raycast alternatives
- Raygun alternatives
- Razorpay alternatives
- RazorSQL alternatives
- Re:amaze alternatives
- Read AI alternatives
- ReadMe alternatives
- Readwise alternatives
- ReadyAPI alternatives
- Readymag alternatives
- RealVNC alternatives
- REAPER alternatives
- Reason alternatives
- Rebrandly alternatives
- Recorded Future alternatives
- Recraft alternatives
- Recruitee alternatives
- Recurly alternatives
- Red Hat Ansible Automation Platform alternatives
- Red Hat OpenShift alternatives
- Reddit alternatives
- Redocly alternatives
- Redshift alternatives
- Redtail CRM alternatives
- Refersion alternatives
- Refiner alternatives
- Reflag alternatives
- Reflect alternatives
- Reform alternatives
- rekordbox alternatives
- Relay.app alternatives
- Relevance AI alternatives
- Relume alternatives
- Remember The Milk alternatives
- Remini alternatives
- RemNote alternatives
- Remo alternatives
- Remote alternatives
- Render alternatives
- Renderforest alternatives
- Replicate alternatives
- Replika alternatives
- Replit alternatives
- RescueTime alternatives
- Resend alternatives
- Resilio Sync alternatives
- Resource Guru alternatives
- respond.io alternatives
- Restream alternatives
- Retell AI alternatives
- Retently alternatives
- Retool alternatives
- Rev alternatives
- Reveal alternatives
- Reverso alternatives
- Rewardful alternatives
- Rhino alternatives
- Ride with GPS alternatives
- RingCentral alternatives
- Ringover alternatives
- Rippling alternatives
- Riverside alternatives
- Rivery alternatives
- Roam Research alternatives
- Roblox alternatives
- Roboflow alternatives
- RoboForm alternatives
- Rocket Money alternatives
- Rocket.net alternatives
- Rocketlane alternatives
- Rollbar alternatives
- Roon alternatives
- Rootly alternatives
- Rootstock alternatives
- Rosebud alternatives
- Rows alternatives
- RSA alternatives
- Rubrik alternatives
- RubyMine alternatives
- Rumble alternatives
- Runbox alternatives
- RunCloud alternatives
- Runn alternatives
- RunPod alternatives
- Runway alternatives
- RustRover alternatives
- Rytr alternatives