ACEVO - the Association of Chief Executives of Voluntary Organisations - has around 1,400 members, all of whom are senior leaders at charities, social enterprises and not-for-profit organisations. It employs 17 staff.
Former ACEVO CEO Sir Stephen Bubb left the role earlier this year after 15 years at the organisation's helm.
Prior to joining CharityComms in 2010, Browning was a freelance consultant, and before that she was a publishing director at Haymarket - the publisher of PRWeek and charity sector title Third Sector.
As the head of CharityComms, which has more than 4,000 members, she has taken a role in the charity sector's response to various allegations of malpractice, including aggressive fundraising tactics, and executive salary levels. Bubb himself earned more than £100,000 in his final year in the role.
In an email news alert sent this afternoon, Browning (in red in images below) said: "It's with a mixture of excitement and sadness that I'm emailing to tell you that I've accepted the position of chief executive of ACEVO, the charity leaders network, starting at the end of January.
"I've had a wonderful six years at CharityComms. I've really enjoyed working with my great team of staff and trustees, and our members, to build our network into the lively, engaged community it is today. I'm leaving an organisation which has a growing, active membership and delivers an impressive range of valued services."
Third Sector reported last week that the outgoing chair of the National Council for Voluntary Organisations had suggested the organisation - which has charities themselves as members, rather than individuals - should create a director rival to the group, following a failure to negotiate a merger of the two.