The loss of source codes is a very serious problem for many developers. From my personal experience I can say that it is indeed a terrible misfortune. Imagine you write the program, spend your force, time and money, release compiled program to the customers... But one morning you see that all your sources are gone (it may be your cat, or aliens. Who knows?) You are in panic. What should you do? Tear one's hair? There is no need. Just take the VB Decompiler and simply decompile your project! VB Decompiler restores the source code from the pseudo code (P-Code) as close as possible to the original. So, after some modifications you may get really workable source code.

Delphi and C++ Builder optical character recognition component.

Features

Uses Tesseract OCR engine and Leptonica image library
Supports Delphi/C++ Builder 5 - 10 and Lazarus 1.4.4
Source code included in full version
Royalty free distribution in applications

GemBox.Spreadsheet is a .NET component that enables developers to read, write, convert and print spreadsheet files (XLSX, XLS, ODS, CSV, HTML, PDF or XPS) from their .NET applications using one simple API. GemBox.Spreadsheet requires only .NET Framework and is many times faster than Microsoft Excel automation. GemBox.Spreadsheet is a .NET component that enables developers to read, write, convert and print spreadsheet files (XLSX, XLS, ODS, CSV, HTML, PDF, XPS) from .NET applications in a simple and efficient way without requiring Microsoft Excel to be installed on the server.

This toolkit dramatically cuts the effort, cost, and risk of migrating to/from any of the following database formats: Oracle, MySQL, SQL Server, PostgreSQL, IBM DB2, IBM Informix, InterSystems CachГ©, Teradata, Visual Foxpro, SQLite, FireBird, InterBase, Microsoft Access, Microsoft Excel, Paradox, Lotus, dBase, CSV/Text and transfer any ODBC DSN data source to them. This toolkit provides a friendly step-by-step Wizard-GUI. All you need to do is: 1. Select a data source; 2. Select a target output format; 3. Select the objects which will be migrating, then submit migration!

Components for viewing, navigating, text extracting and editing PDF files.

Features:

Uses PDFium open-source PDF rendering engine
Available for .NET 2 - 4.6
Source code included in full version
Royalty free distribution in applications

Delphi and C++ Builder components for viewing, navigating, text extracting and editing PDF files.

Features:

Uses PDFium open-source PDF rendering engine
Supports Delphi/C++ Builder 5 - 10 and Lazarus 1.4.4
Source code included in full version
Royalty free distribution in applications

Delphi and C++ Builder components for playing and recording waveform audio.

Features

uses standard Windows Waveform Audio API
supports raw PCM audio data and PCM wav files
available for Delphi/C++ Builder 5 - 10 and Lazarus 1.4.2
source code included in full version
royalty free distribution in applications

Delphi and C++ Builder components for preparing and burning images to CD, DVD, and Blu-ray optical storage media.

uses standard Windows Image Mastering API 2
available for Delphi/C++ Builder 5 - 10 and Lazarus 1.4.2
source code included in full version
royalty free distribution