MoManI

The Model Management Infrastructure (MoManI), is a browser-based open source interface for energy systems modelling. Available to all manner of users, from policy makers and energy planners through to academics. MoManI helps energy planners to construct models, manipulate data and modify, add or delete equations, operate OSeMOSYS, design and analyze scenarios, and finally visualize results. It’s easy to grasp structure mitigates the perceptible complexity of OSeMOSYS thereby supporting effective capacity building activities. Its novel structure allows different teams to collaborate simultaneously from around the globe. Each user can easily edit and update any part of the modelling process: from the underlying mathematical equations of OSeMOSYS through to the visualization of results.
OTHER INTERFACES ...
LEAP

The Long Range Energy Alternatives Planning (LEAP) tool uses OSeMOSYS to generate optimal power generation scenarios. LEAP has a powerful and user friendly interface. LEAP compiles an input text file, runs OSeMOSYS, generates results and incorperating them into its easy to its powerful results viewing components.
OSINDA

OSINDA (OSeMOSYS Interface and Database), is a Microsoft Access-based environment to replace the OSeMOSYS data files and provide graphical analyses of results.
Notepad ++

"Notepad++ is a free (as in "free speech" and also as in "free beer") source code editor and Notepad replacement that supports several languages. Running in the MS Windows environment, its use is governed by GPL License." (https://notepad-plus-plus.org/)
Notepad++ is a useful tool to work directly with the OSeMOSYS model and data files.
Notepad++ is a useful tool to work directly with the OSeMOSYS model and data files.