Here is a list of vendor tools that might be useful for the every day database administrator and/or developer. The companies are listed in alphabetical order and I am not promoting them in any way.

Attunity
Change data capture, replication, connectivity adapters, and federated databases are some of the products this company offers.

Confio
Ignite 8 – identifies, analyzes and resolves SQL Server database performance problems affecting your applications and users

DBSophic
Qure – A radical new way to approach database tuning. Instead of query by query, it does work load tuning.

Embarcadero
DB Power Studio – is an intuitive, highly-visual toolset that complements SSMS with critical capabilities such as database change management and SQL optimization and tuning.

Expressor
Expressor Studio – is an easy-to-use, modern, metadata-driven ETL tool that offers a simplified approach to data integration; ranging from small ad-hoc ETL tasks to complex data integration projects.

Idera
SQL diagnostic manager – Identify and resolve SQL Server problems before they happen; Monitor and manage SQL Servers enterprise-wide; Find and fix performance bottlenecks; Analyze performance over time; Diagnose and resolve issues from the desktop or mobile device; No agents or database objects required on monitored servers

SQL toolbox includes must-have tools for DBAs and Developers like:

• SQL doctor for performance tuning
• SQL admin toolset for daily administration tasks
• SQL comparison toolset for data and schema compare
• SQL safe lite for fast, compressed backups
• SQL virtual database for instant data recovery

Quest
Toad – is a well know tool for managing databases regardless of their type.
Spotlight – Operational Monitoring, Diagnostics, Administration and Automated Tuning.
Lightspeed – Reduce Database Backup Size &Time; Cut Recovery Time and Storage Costs.

Red Gate Software
SQL Toolbelt – 14 essential tools for SQL Server developers and DBAs
SQL Monitor – SQL Server performance monitoring and alerting
SQL DBA Bundle – High-performance SQL Server database administration tools

SQL Sentry
Performance Advisor – provides unparalleled insight, awareness and control over the true source of SQL Server performance issues, all designed with the singular goal of simplifying the process of performance tuning and optimization.

Event Manager – is the ultimate scheduling, alerting and response system for optimizing schedule performance of database servers across your enterprise.