NCache is a 100% Native .NET Open Source distributed cache (released under Apache License, Version 2.0). NCache provides an extremely fast and linearly scalable distributed cache that caches application data and reduces expensive database trips. Use NCache to remove performance bottlenecks related to your data storage and databases and scale your .NET and Java applications to extreme transaction processing (XTP).

Microsoft has worked hard to make .NET and SQL Server a powerful combination - and VistaDB brings that capability to a small, easy to deploy package. Instead of having to ship a large installation which has to be set up independently for your application to work you can just ship 2 MB of extra assemblies with your .NET application. It's easy to make applications that start with VistaDB and scale up with SQL Server, all from a common codebase.

SQLyog MySQL GUI is the most popular MySQL Manager and MySQL Admin Tool,combining the features of MySQL Query Browser, phpMyAdmin and various other MySQL Front Ends and MySQL Clients in a single intuitive interface. Working with MySQL can sometimes be painful. SQLyog has the ability to take even the most difficult and time consuming tasks and make them a breeze.

NoSQLBooster for MongoDB (formerly MongoBooster) is a shell-centric cross-platform GUI tool for MongoDB v2.6-4.0, which provides fluent query builder, SQL query SQL Query, update-in-place, ES2017 syntax support and true intellisense experience. NoSQLBooster for MongoDB offers true IntelliSense experience. The build-in language service knows all possible completions, methods, properties, variables, key words, even the MongoDB collection names, field names and operators. The IntelliSense suggestions will pop up as you type. You can always manually trigger it with Ctrl-Shift-Space. Out of the box, Ctrl-Space, Alt-Space are acceptable triggers.

EasyQuery ASP.NET Core

EasyQuery allows you to integrate end-user-oriented query builder into your ASP.NET Core project.

Friendly, natural language query builder UI: users do not need to know about your tables, links, fields or any other DB-related things.
.NET Core 2.0 is supported.
Works with Entity Framework Core 2.0.
Supports any database that has a .NET Core connector.
Targets .NET Standard 1.3 and 2.0.

NDepend is the only Visual Studio extension that is able to tell the developer that over the past hour, the code just written has introduced debt that would cost for example about 30 minutes should it have to be repaid later. Knowing this, the developer can fix the code before even committing it to the source control.

SQLite Expert is a powerful tool designed to simplify the development of SQLite3 databases. It is a feature rich administration and development tool for SQLite designed to answer the needs of all users from writing simple SQL queries to developing complex databases. The graphical interface supports all SQLite features. It includes a visual query builder, an SQL editor with syntax highlighting and code completion, visual table and view designers and powerful import and export capabilities.

NoSQLBooster for MongoDB (formerly MongoBooster) is a shell-centric cross-platform GUI tool for MongoDB v2.6-4.0, which provides fluent query builder, SQL query SQL Query, update-in-place, ES2017 syntax support and true intellisense experience. NoSQLBooster for MongoDB offers true IntelliSense experience. The build-in language service knows all possible completions, methods, properties, variables, key words, even the MongoDB collection names, field names and operators. The IntelliSense suggestions will pop up as you type. You can always manually trigger it with Ctrl-Shift-Space. Out of the box, Ctrl-Space, Alt-Space are acceptable triggers.