The SCC said in a statement that integrating the two services would "significantly increase the number of potential trustees viewing the vacancies and, as a result, help fill more trustee positions in charities of all sizes".
Trustee Finder is free to all charities regardless of their annual income or size.
Before yesterday’s relaunch, would-be trustees logging on to Trustee Finder were shown trustee vacancies from the Do-it database, but volunteers looking for opportunities through Do-it did not see Trustee Finder roles.
This cross-posting now works both ways, with all vacancies posted on Trustee Finder also appearing on Do-it.
John Barrett, operations manager at the SCC, said this means that members of the public who want to volunteer in some way, but who are not fully aware of what trustee vacancies involve and would therefore not specifically be looking for them, would be exposed to the possibility of becoming a trustee.
Do-it is run by the charity ivo, which connects more than 200,000 volunteers with charities every month.
Trustee Finder was first launched in 2008 as trusteefinder by Charity Trustee Networks, which merged with the coalition in 2011. After a brand review in 2012, it decided to move all services into the SCC brand. The Trustee Finder service is the last element of the merger to be transferred to SCC. The CTN website closed on 17 February.
Alex Swallow, chief executive of the SCC, said: "Our free Trustee Finder service is a very valuable resource for our members and we are delighted with the improvements."
Jamie Ward-Smith, chief executive of ivo, said: "We are so pleased to be working with the Small Charities Coalition to ensure that charities have even better access to the trustees they need to steer their organisations. We are confident that this joined-up tool will further enable charities to find the trustees they require."