Download of JChem for Office 6.3.0.1036 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This program was originally produced by ChemAxon. The most popular versions among the program users are 6.3, 6.2 and 6.1. We recommend checking the downloaded files with any free antivirus. The program is included in Office Tools.
From the developer:
JChem for Office integrates structure handling and visualizing capabilities within a Microsoft Office environment. JChem for Office provides a wide integration with MS Office that allows you to enrich Office documents with chemical structures and calculations. Structures can be easily loaded and edited making it easier to prepare reports and calculate properties on spreadsheets.
You may want to check out more software, such as Kingsoft office flip, Office Viewer OCX or SSuite Office The Fifth Element, which might be related to JChem for Office.
Science
Office Tools