| APIs | Maintain | 117,250 | $167,500 |
| Application Framework | Maintain | 85,257 | $72,500 |
| API (Application Programming Interface) | Maintain | 34,539 | $152,500 |
| .NET | Maintain | 23,302 | $122,500 |
| Enterprise Software | Not rated | 18,392 | $167,500 |
| Spring | Maintain | 17,577 | $147,500 |
| Spring Boot | Invest | 13,023 | $147,500 |
| Software Components | Maintain | 10,542 | $147,500 |
| Software integration | Maintain | 8,908 | $152,500 |
| Game Development | Maintain | 8,092 | $122,500 |
| Messaging Applications | Not rated | 7,925 | $82,500 |
| Development Frameworks | Maintain | 7,733 | $137,500 |
| Enterprise Solutions | Not rated | 6,469 | $152,500 |
| Java Spring | Invest | 6,195 | $142,500 |
| Unreal Engine | Invest | 5,605 | $137,500 |
| .NET Core | Maintain | 5,261 | $132,500 |
| Custom Software Development | Invest | 5,189 | $112,500 |
| Low-code development | Not rated | 5,041 | $147,500 |
| Java EE | Migrate | 4,756 | $137,500 |
| Platform Development | Not rated | 4,678 | $172,500 |
| Unity | Invest | 4,665 | $152,500 |
| Game Engines | Not rated | 4,154 | $162,500 |
| Component libraries | Invest | 4,024 | $162,500 |
| Application Integration | Not rated | 3,554 | $142,500 |
| Desktop Applications | Not rated | 3,282 | $107,500 |
| Windows Applications | Maintain | 2,850 | $57,500 |
| ERP Implementation | Invest | 2,514 | $137,500 |
| Twilio | Invest | 2,492 | $167,500 |
| Python Frameworks | Not rated | 2,003 | $167,500 |
| Stripe | Not rated | 1,850 | $167,500 |
| Force.com | Maintain | 1,833 | $132,500 |
| Object-relational mapping | Maintain | 1,811 | $152,500 |
| Messaging Services | Maintain | 1,793 | $97,500 |
| Qt | Maintain | 1,655 | $102,500 |
| AI Model Serving and Inference Optimization | Invest | 1,646 | $212,500 |
| Code libraries | Maintain | 1,537 | $177,500 |
| OpenGL | Maintain | 1,172 | $182,500 |
| Apigee | Maintain | 1,060 | $147,500 |
| Graphics Performance | Maintain | 998 | $192,500 |
| Plugin Development | Maintain | 947 | $162,500 |
| JBoss | Maintain | 904 | $132,500 |
| Jee | Migrate | 786 | $122,500 |
| Apollo | Invest | 752 | $187,500 |
| Oracle Application Express (APEX) | Invest | 752 | $132,500 |
| Asynchronous Processing | Invest | 700 | $147,500 |
| Tools and APIs | Maintain | 665 | $177,500 |
| Gaming Technology | Maintain | 651 | $132,500 |
| Microsoft Graph (API) | Maintain | 608 | $142,500 |
| Toolkits | Maintain | 560 | $157,500 |
| Pydantic | Maintain | 503 | $192,500 |
| Windows Communication Foundation (WCF) | Migrate | 480 | $122,500 |
| Compatibility Software | Maintain | 466 | $122,500 |
| Flux | Migrate | 435 | $137,500 |
| DirectX | Maintain | 401 | $187,500 |
| Graphics APIs | Maintain | 391 | $182,500 |
| Rules Engine | Maintain | 377 | $162,500 |
| Dagger 2 | Maintain | 355 | $182,500 |
| Oracle Forms | Migrate | 337 | $137,500 |
| Native Libraries | Monitor | 325 | $177,500 |
| ERP System Implementation | Invest | 320 | $132,500 |
| Sidekiq | Maintain | 314 | $187,500 |
| Component-Based Frameworks | Maintain | 311 | $157,500 |
| Scene Management Software | Maintain | 306 | $52,500 |
| Boost | Migrate | 295 | $152,500 |
| Swing | Migrate | 294 | $122,500 |
| MFC | Migrate | 287 | $97,500 |
| Shader Development | Invest | 260 | $167,500 |
| Oracle Fusion Middleware | Migrate | 247 | $137,500 |
| VBCS | Monitor | 236 | $152,500 |
| RxJava | Monitor | 230 | $157,500 |
| QML | Maintain | 227 | $127,500 |
| Microsoft.NET Framework | Migrate | 208 | $122,500 |
| Volunteer Management System Development | Invest | 206 | $57,500 |
| Drools | Maintain | 200 | $167,500 |
| FFmpeg | Maintain | 200 | $197,500 |
| Multimedia Applications | Maintain | 195 | $87,500 |
| Mendix | Invest | 193 | $102,500 |
| OSGi | Monitor | 178 | $152,500 |
| Cross-Platform Integration | Maintain | 156 | $167,500 |
| PowerBuilder | Migrate | 154 | $147,500 |
| Utility Library | Maintain | 146 | $87,500 |
| Tokio | Invest | 145 | $152,500 |
| Oracle ADF | Migrate | 135 | $137,500 |
| Windows Apps | Maintain | 131 | $172,500 |
| Video encoder software | Not rated | 125 | $127,500 |
| Educational Software Development | Maintain | 121 | $182,500 |
| Micronaut | Maintain | 118 | $142,500 |
| Windows Forms | Migrate | 116 | $117,500 |
| Java Libraries | Maintain | 112 | $142,500 |
| Unity Game Engine | Invest | 112 | $92,500 |
| PyQt | Maintain | 110 | $137,500 |
| WildFly | Migrate | 96 | $102,500 |
| Data Binding | Maintain | 85 | $97,500 |
| Frostbite Engine | Monitor | 84 | $167,500 |
| AppKit | Maintain | 79 | $157,500 |
| 3D Game Development | Maintain | 77 | $172,500 |
| Win32 API | Maintain | 72 | — |
| Electron | Maintain | 71 | $187,500 |
| Graphic Rendering | Maintain | 70 | — |
| Amazon Lumberyard | Migrate | 65 | — |
| Combine Framework | Monitor | 62 | — |
| Apache Flex | Obsolete | 60 | $42,500 |
| Basis BBx VisualPRO/5 | Migrate | 59 | $92,500 |
| SalesLogix | Obsolete | 59 | $92,500 |
| Lightweight Frameworks | Maintain | 57 | $127,500 |
| NHibernate | Migrate | 55 | $122,500 |
| Boost Libraries | Maintain | 51 | — |
| Jakarta EE | Invest | 51 | $147,500 |
| Applets | Obsolete | 46 | $152,500 |
| Multimedia Programming | Maintain | 40 | $72,500 |
| Java beans | Maintain | 39 | $137,500 |
| .NET Integration | Maintain | 38 | — |
| GIMP Toolkit | Maintain | 36 | $162,500 |
| Java Integration | Maintain | 36 | $167,500 |
| Thrift | Migrate | 36 | $217,500 |
| Apollo Federation | Invest | 35 | — |
| Java API for XML Processing | Migrate | 35 | — |
| Reactive Extensions | Maintain | 35 | $202,500 |
| Multi-Language Support | Maintain | 34 | $147,500 |
| Pillow | Maintain | 34 | $147,500 |
| Photon | Monitor | 32 | $177,500 |
| Model Context Protocol (MCP) Server Development | Invest | 31 | $147,500 |
| Networking Libraries | Maintain | 30 | $182,500 |
| Karaf | Migrate | 28 | — |
| Vector Database Integration | Invest | 28 | $177,500 |
| Jackson | Maintain | 25 | — |
| CoreGraphics | Maintain | 23 | $147,500 |
| Spring AOP | Maintain | 22 | — |
| Java Collections Framework | Maintain | 20 | $272,500 |
| Wavemaker | Not rated | 20 | — |
| Apache Jakarta (POI) | Maintain | 19 | $147,500 |
| Xerces2 Java Parser | Migrate | 19 | $67,500 |
| YouTube API | Maintain | 19 | — |
| iText | Maintain | 19 | $122,500 |
| Edge Function Development | Invest | 18 | — |
| C++ Standard Library | Maintain | 17 | $202,500 |
| Voice-to-Text Software | Maintain | 17 | $97,500 |
| Development - Macromedia Flash | Obsolete | 16 | — |
| Google Apps (API) | Maintain | 16 | — |
| EclipseLink | Maintain | 15 | — |
| Telegram API | Maintain | 15 | $67,500 |
| iTextSharp | Migrate | 15 | — |
| .NET Framework 3.0 | Migrate | 14 | — |
| Appeon | Migrate | 14 | — |
| Devise | Monitor | 13 | — |
| Adobe Director | Obsolete | 12 | $137,500 |
| Alpha Five | Monitor | 12 | $32,500 |
| GSON | Maintain | 12 | — |
| ScanSoft Naturally Speaking | Not rated | 12 | — |
| BEA WebLogic | Migrate | 11 | — |
| Benetech PRA | Monitor | 11 | — |
| CSLA | Migrate | 10 | — |
| Woll2Woll InfoPower Studio | Migrate | 10 | — |
| API Navigator | Maintain | 9 | — |
| Adobe AIR | Obsolete | 9 | — |
| sim4 | Not rated | 9 | — |
| Autofac | Monitor | 8 | — |
| GlassFish | Migrate | 8 | — |
| Object Request Broker (ORB) | Migrate | 8 | — |
| SP-API | Maintain | 8 | — |
| Facebook API | Maintain | 7 | — |
| Java Management Extensions | Monitor | 7 | — |
| PDFTron | Maintain | 7 | $82,500 |
| VCL Framework | Migrate | 7 | — |
| VLC Media Player | Maintain | 7 | — |
| BEA Tuxedo | Migrate | 6 | — |
| Intercom API | Maintain | 6 | — |
| ColdSpring | Migrate | 5 | — |
| CoreFoundation | Maintain | 5 | — |
| EventMachine | Migrate | 5 | — |
| Google Sheets API | Maintain | 5 | — |
| JBoss Seam | Migrate | 5 | — |
| Poco | Monitor | 3 | — |
| ReportLab | Maintain | 3 | — |
| Scheduling API | Maintain | 3 | — |
| WinAPI | Maintain | 3 | — |
| GTK+ | Maintain | 2 | — |
| Microsoft ESP (SDK) | Monitor | 2 | — |
| PDFKit | Maintain | 2 | — |
| 2D Game Development | Maintain | 1 | — |
| Apaleo | Maintain | 1 | — |
| EhCache | Monitor | 1 | — |
| Game Replay System Management | Maintain | 1 | — |
| Google SDK | Maintain | 1 | — |
| LinkedIn API | Maintain | 1 | — |
| On-Device LLM Inference Integration | Invest | 1 | — |
| PureMVC | Migrate | 1 | — |
| eBay API | Invest | 1 | — |
| AMD Adrenalin Edition | Migrate | — | — |
| AMD Radeon Software | Migrate | — | — |
| API Development Specialists | Invest | — | — |
| Agricultural Software Development | Invest | — | — |
| Aztec | Maintain | — | — |
| Belmar & Associates Mortware | Migrate | — | — |
| Biztrak | Migrate | — | — |
| Borland VisiBroker | Obsolete | — | — |
| CyrillicSoftware Cyrillic | Not rated | — | — |
| Data Pipeline Orchestration with Workflow Engines | Maintain | — | — |
| Dialog DialogLink | Not rated | — | — |
| EZ-Zone Optizone Enterprise | Migrate | — | — |
| Elite Software (VDROP) | Monitor | — | — |
| Ellie Mae Contour | Migrate | — | — |
| Ellie Mae Genesis | Migrate | — | — |
| Enabl-u Technologies (APIS) | Migrate | — | — |
| Equifax Application Engine | Maintain | — | — |
| Fujitsu MOPAC | Monitor | — | — |
| GNU gettext | Maintain | — | — |
| GTK4 | Maintain | — | — |
| HaxeFlixel | Monitor | — | — |
| ITEM ToolKit | Monitor | — | — |
| Innovative Software Solutions Picas | Monitor | — | — |
| Intel PMDK | Migrate | — | — |
| JVx | Monitor | — | — |
| LLM Application Orchestration with LangChain | Monitor | — | — |
| Oilfield Services Software | Maintain | — | — |
| OpenFL | Migrate | — | — |
| OpenSocial | Obsolete | — | — |
| OpenXava | Monitor | — | — |
| Pd' Programming Intersection Magic | Not rated | — | — |
| Perl Frameworks | Migrate | — | — |
| Pusher | Maintain | — | — |
| PyObjC | Monitor | — | — |
| PyTorch Quantum Implementation | Invest | — | — |
| Rapide | Not rated | — | — |
| Satellite Assembly | Not rated | — | — |
| Sharp.js | Maintain | — | — |
| Unreal Engine for action game development | Invest | — | — |
| Viper Tools | Monitor | — | — |
| Win32 App Development | Monitor | — | — |
| Yelp API | Monitor | — | — |
| Zipeg | Obsolete | — | — |
| gettext | Maintain | — | — |
| wxWidgets | Migrate | — | — |