ISM Library is an IBM website where you can find addons, plugins and extensions available for all IBM products including Maximo.
I really think it is worth spending 5 minutes of your time to look at what extensions are available. Here is the link that will take you directly to the list of solutions available for Enterprise Asset management (EAM): https://www-304.ibm.com/software/brandcatalog/ismlibrary/search#rc=AssetManagement:Asset%20Management
I also suggest you to sort results by ‘most viewed’ to find the most popular solutions.
You will see my Android App for IBM Maximo Everyplace solution at 15th ranking.