E.g.: ProCube is utility for MS Analysis Services (MSAS) wich allows you to update data in cubes and demensions without opening MSAS-project. You want to deploy data in your MSAS-project but get "connection limit" error from Terminal-server. ProCube allows you to solve this problem. http://procube.narod.ru/index_e.htm
If this is a promotion of your tool then please post in relevant forum section which is third party tools. Further if you need to an assessment & review then get in touch with webmaster of this site. (post moved from SSAS2005 section)
As usual SQL Server Management Studio to manage the instances of that Analysis services instance, FOr development you need Business INtelligence Development Studio (BIDS), further refer to the books online on the section of tools in thsi regard:: BOL - ms-help://MS.SQLCC.v9/MS.SQLSVR.v9.en/uas9/html/0e53cbcf-0dda-4aa0-b8d9-b347e8406ce8.htm entry on the tools you need to handle the SSAS.