| Name | Type | Author | Release | Web |
|---|---|---|---|---|
| Add-Ons | Client Manipulation | Sordie | Public | |
| Camel | Server | Blo | Private | |
| eConfig | Setup | Vult-r | Public | Endless Online |
| Edit Pub | Pub Editor | Rena | Public | |
| EGF Patcher | Patcher | Cirras | Public | Github |
| EgfUpdater.exe | Patcher | Vult-r | Public | Endless Online |
| EIRC | Chat | Vult-r | Public | Endless Online |
| Endless | Client | Vult-r | Public | Endless Online |
| Endless Client | Client | DarthChungis | Public | Github |
| Endless Online (mobile) | Interface | Vult-r | Public | Endless Online |
| Endless Online DBCrypt (plus) | Setup | Vult-r | Private | Endless Online |
| Endless-Online_Development | Client | Gantic | Public | Github |
| EO (various) Studios | Viewer | Vult-r | Private | Endless Online |
| EO Map Editor | Map Editor | Rena | Public | |
| EO Map Studio | Map Editor | Vult-r | Private | Endless Online |
| EO Protocol Parser | Utility | Sorokya | Public | Github |
| EO Script | Quest Editor | Vult-r | Private | Endless Online |
| EO Sim | Simulation | Vult-r | Private | Endless Online |
| EOData | EDF File Editor | Cirras | Public | Github |
| EODecode | Utility | Sordie | Public | |
| EODM | Viewer | Sordie | Public | |
| EODrawChar | Viewer | Sordie | Public | |
| EOInvReset | Utility | Sordie | Public | |
| EOMap | Map Editor | Sausage, Bart, Apollo | Public | EOSERV |
| EOMap-JS | Map Editor | Cirras | Public | Github |
| EOPLAY | Client | Apollo | Private | |
| EOProxy | Client Manipulation | Sausage | Public | EOSERV |
| EOPub | Pub Editor | Vult-r | Public | Endless Online |
| EOS | Server | Vult-r | Private | Endless Online |
| EOSEP | Server | Rena | Private | |
| EOSERV | Server | Sausage | Public | EOSERV |
| EOStarProxy | Client Manipulation | Plasmastar | Public | |
| EPE | Client Manipulation | Rena | Public | |
| EScr | Viewer | Vult-r | Public | Endless Online |
| Kalandra | Server | Sordie | Public | |
| Meow | Server | Sordie | Public | |
| Pub Edit | Pub Editor | Rena | Public | |
| REOSERV | Server | Sorokya | Public | Github |
| Sea | Client Manipulation | Sordie | Public | |
| SEOSE | Server | Sordie | Public | |
| Sever Link Network | Informational | Sausage, Apollo | Private | SLN |
| Soda Talk | Simulation | Vult-r | Private | Endless Online |
| WebCP | Interface | Sausage | Public | EOSERV |