The phrase "almost exclusively open" is correct and usable in written English.
It can be used to describe something that is primarily or mainly open, with only a few exceptions.
Example: "The park is almost exclusively open to the public, allowing visitors to enjoy its natural beauty."
Alternatives: "primarily open" or "mostly open".
For now, the team is almost exclusively focusing on open source, but the company's ambitions are obviously larger and will likely expand to internal bug tracking systems and maybe even commercially available software, too.
The only stingray that almost exclusively inhabits the open ocean, this species is typically found in surface waters down to a depth of 100 m.
We show that during the transformation process, nucleosome-depleted regions (defined by formaldehyde-assisted isolation of regulatory elements (FAIRE)) are largely unchanged and that both before and during transformation, STAT3 binds almost exclusively to previously open chromatin regions.
Rural participants consist of native subsistence farmers who cook almost exclusively with traditional, open-fire stoves and biomass fuels (i.e., wood, animal dung, and crop residue).
With both sports played almost exclusively as doubles games, open space is hard to come by on the small courts.
They are almost exclusively pelagic (feeding in the open ocean), and have a cosmopolitan distribution across the world's oceans, with the highest diversity being around New Zealand.
The Aztecs called paradise Tlalocan, eternally warm and abundant, but open exclusively, or almost exclusively, to people who drowned or were struck dead by lightning.
Given that most Chinese people wouldn't recognize a plate of sticky orange chicken if it was splattered in their face, it seems an odd move to open an eatery almost exclusively serving American-style Chinese food in the middle of Shanghai.
Philip Slein Gallery; St . Louis MO Philip Slein Gallery, which has been open since 2003, is almost exclusively focused on painting, with a strong predilection for abstraction.
Both parts are composed almost exclusively of static interior shots framing bright, open doorways where men saunter in and out, bringing news, money, and their fleeting affections.
