ocitrace
- A dynamic library (.dll/.so) loaded into memory at user side it tracks all OCI calls issued by programs run at user side. [Open source, MIT License]
- http://www.lightdruid.com/projects/ocitrace/

Unicenter SQL-Station
- Edit, test, tune, and debug SQL and stored code (works with Oracle, Microsoft and Sybase). By Computer Associates. [Commercial]
- http://www3.ca.com/solutions/Product.aspx?ID=1358

Pl/Sql tidy
- Allows the user to tidy and format PL-SQL code in a batch file or DOS prompt. [Freeware]
- http://psti.equinoxbase.com/

Isidian SQL Insight
- A tool that enables users of an Oracle database to easily create and optimize their SQL code for application development, administration, or ad-hoc reporting. [Commercial]
- http://www.isidian.com/products/sqlinsight/

Pl/Pdf
- Generate dynamic PDF documents from data stored in Oracle databases using the PL/PDF program package. [Commercial]
- http://www.plpdf.com/

SQLGrid
- An interactive query tool for Oracle developers. This is a SQL Worksheet replacement with a host of additional commands. SQLGrid provides a way to execute arbitrary SQL or PL/SQL code and also investigate how it is execute and its resource consumption.
- http://iccnet.50megs.com/Products/SQLGrid/SQLGrid.htm

SwisSQL
- Oracle to Java edition helps convert Oracle PL/SQL procedures to Java. By Vembu Technologies. [Commercial]
- http://www.swissql.com/

Semantica Groep B.V.
- Creator of various PL/SQL libraries and tools. PL/Run is a PL/SQL API solution that manages all background processes on one or more servers. PL/File offers file-, directory- and zip file functionality from within Oracle. PL/Crypt offers digest, encryption
- http://www.semantica.nl/pl-en/

KeepTool
- Oracle-related products include a developer's environment known as Hora, and a PL/SQL debugger. [Commercial]
- http://www.keeptool.de/en/products.php

Benthic Software
- PLEdit: a PL/SQL editor, one of several Oracle tools. [Commercial]
- http://www.benthicsoftware.com/products.htm

Embarcadero Technologies
- Development environment for SQL and PL/SQL, with optional debugger and profiler. Includes tools for Transact-SQL, Java, HTML. [Commercial]
- http://www.embarcadero.com/

DreamCoder for Oracle
- PL/SQL development environment that includes a debugger. Several editions available; high-end edition includes a code generator. By Mentat Technologies. [Commercial]
- http://www.mentattech.com/modules.php?op=modload&name=PagEd&file=index&page_id=12

ClearSQL by Nordic Tree Software
- A tool for formatting PL/SQL source code and reviewing it for deficiencies in the areas of readability, program structure, maintainability and correctness. It catches over 40 common coding mistakes and gives suggestion as to coding best practice. ClearSQL
- http://www.clearsql.com/

Oracle Developer Suite
- Includes various PL/SQL code generators in "Designer" component, also PL/SQL Procedure Builder [Commercial]
- http://www.oracle.com/ip/develop/ids/

OraTools
- Execute, test, and debug SQL and PL/SQL statements. By Core Lab. [Commercial]
- http://crlab.com/oratools/

SQLTools
- A light weight and robust tool for Oracle database development. It includes a text editor, SQL console and utilities. [Freeware]
- http://www.sqltools.net/sqltools.html

Log 4 pl/sql
- Generic tool for logging, benchmarking, and monitoring custom PL/SQL code, inspired by "log4j" [Open source, GPL]
- http://log4plsql.sourceforge.net/

Bear Claw
- Variety of products that extend PL/SQL functionality, providing utilities such as FTP, telnet, and ZIP file manager. Implemented as stored procedures. [Commercial]
- http://www.bearclawinc.com/products.htm

pldoc
- Open source utility, analogous to javadoc, that generates PL/SQL code documentation in HTML. [Open source, LGPL]
- http://pldoc.sourceforge.net/

Material Dreams
- PL/SQL trace tool, table exporter, session manager, shared pool profiler, and other tools. [Commercial]
- http://www.materialdreams.com/oracle/products.html

SQL-Programmer
- Cross-platform database aqpplication development environment, formerly sold by Sylvain Faust Software. By BMC Software. [Commercial and free versions]
- http://www.bmc.com/products/proddocview/0,,19052_0_0_7796,00.html

PL/SQL Developer
- Single product that includes editor, and debugger. By Allround Automations. [Commercial]
- http://www.allroundautomations.nl/plsqldev.html