A selection of development tools for database and data warehouse work.  I have tried to indicate where uac elevation is required to install them.

SQL Server

• Poor SQL http://poorsql.com SQL formatting (online)
• Poor Man’s T-SQL  formatter Visual Studio extension (CTRL K + C)  (no uac)
• Poor Man’s T-SQL Formatter SSMS Extension (uac)
• Sentry One Plan Explorer  https://www.sentryone.com/plan-explorer (uac)
• Redgate SQL Prompt. 
• Azure Data Studio. installed with SSMS.  I’m not yet a convert to this,  although it does allow direct switching between Azure SQL databases unlike SSMS.

Analysis Services

• Dax Studio essential for analysing DAX queries https://www.sqlbi.com/tools/dax-studio/   (uac)
• BISM Normalizer   Visual Studio extension.  Schema compare and merge for SSAS Tabular models. Rationalises the .bim file JSON hell. Home Page – BISM Normalizer (bism-normalizer.com) (no uac)
• Tabular editor  will appear as a menu in PowerBI.  A better experience for editing tabular models than PowerBI or Visual Studio. (uac for installer but TabularEditor.exe can be run direct).

Working with data

• JSON formatting and validation, online JSON Formatter & Validator (curiousconcept.com)

General

• Greenshot. Screen capture with annotation and obfuscation features.  https://greenshot.org.  (no uac – normally)
• ASCII Text Generator  https://patorjk.com/software/taag  – the Big Money formats work well for heading scripts.