Bilal Abdul Kareem has been released by Hayat Tahrir al-Sham after being held for six months.
Tauqir Sharif had been held by the HTS militant group since August.
HTS detains American journalist Bilal Abdul Kareem in Syria
Bilal Abdul Kareem's arrest is linked to the case of Tauqir Sharif, an aid worker detained by the powerful jihadist group in June.
HTS clashes with new jihadi formation in Idlib province
HTS have clashed with jihadi groups such as Hurras Al-Din in Idlib.
Journalists take US to court over Trump's 'kill list'
Two journalists reporting from Syrian opposition areas and Pakistan have taken the US to court, believing their names are on a hit list.
Rebel commander reveals reasons for the fall of Aleppo
Aleppo's former rebel commander has explained that poor cooperation between factions and low morale were the main causes of the fall of the city to the Syrian regime.