Development Sector Terminology Dictionary with Formulae and Case Studies
ImpactLex is a free, offline-capable Progressive Web App (PWA) providing rigorous definitions of development sector terminology. Built for NGO professionals, impact practitioners, researchers, and students across South Asia and beyond.
🚀 Launch ImpactLex · 📚 ImpactMojo
| Feature | Description |
|---|---|
| 📖 Glossary | 200+ terms with rigorous definitions from OECD-DAC, UNDP, World Bank, J-PAL |
| 📐 Formulae | Key equations used in impact evaluation and development economics |
| 📋 Case Studies | Real-world applications from Progresa to BRAC Graduation |
| 🔍 Smart Search | Fuzzy matching across terms, definitions, and acronyms |
| 🏷️ Categories | MEAL, Theory of Change, Gender, Research Methods, Economics, Governance, Climate |
| 🌙 Dark Mode | Comfortable reading in any environment |
| 📱 PWA | Install on mobile/desktop, works offline |
| 💾 Bookmarks | Save terms with CSV export |
- MEAL — Monitoring, Evaluation, Accountability & Learning
- Theory of Change — Programme design and causal pathways
- Gender — Intersectionality, GBA+, unpaid care, mainstreaming
- Research Methods — RCTs, DiD, PSM, quasi-experimental designs
- Development Economics — Poverty measurement, inequality, cost-effectiveness
- Governance — Accountability, participation, decentralization
- Climate — Adaptation, mitigation, resilience, NDCs
Visit impactlex.impactmojo.in
- Open the site on your phone or desktop browser
- Click "Install" when prompted (or use browser menu → "Add to Home Screen")
- Access offline anytime
git clone https://github.com/yourusername/impactlex.git
cd impactlex
# Serve with any static server
python -m http.server 8000
# or
npx serveimpactlex/
├── index.html # Main application (single-page app)
├── manifest.json # PWA manifest for installation
├── sw.js # Service worker for offline functionality
├── README.md
├── LICENSE
└── .gitignore
Definitions are sourced from authoritative references including:
- OECD-DAC Evaluation Criteria and Glossary
- UNDP Results-Based Management Handbook
- World Bank Development Impact Evaluation (DIME)
- J-PAL Research Resources
- UN Women Gender Equality Glossary
- IPCC Climate Assessment Reports
- Academic literature (Sen, Banerjee, Duflo, Angrist, etc.)
We welcome contributions! To add or improve terms:
- Fork the repository
- Edit the
GLOSSARY_DATA,FORMULAE_DATA, orCASE_STUDIES_DATAarrays inindex.html - Ensure definitions cite authoritative sources
- Submit a pull request
Quality Standards:
- Definitions must be rigorous and source-backed
- Formulae must include variable explanations
- Case studies must cite published evaluations
ImpactLex is part of the ImpactMojo ecosystem — a free educational platform for development sector professionals offering:
- 📚 Courses in MEAL, Theory of Change, Gender, Research Methods
- 🧪 Interactive Labs and Tools
- 🎓 Coaching and Workshops
- 🌏 Content in English, Hindi, Tamil, Bengali, Telugu, Marathi
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
You are free to:
- Share — copy and redistribute the material
- Adapt — remix, transform, and build upon the material
Under the following terms:
- Attribution — Credit ImpactMojo and link to the original
- NonCommercial — Not for commercial purposes
- ShareAlike — Distribute contributions under the same license
- Website: impactmojo.in
- Email: hello@impactmojo.in
- LinkedIn: ImpactMojo
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