Unofficial template for an abstract for the International Conference on Electron, Ion and Photon Beam Technology and Nanofabrication (EIPBN) https://eipbn.org/
There is another template for their conference proceedings, see on their website.
Alex Liberzon, Turbulence Structure Laboratory, Tel Aviv University
LaTeX Overleaf template for ACL-IJCNLP 2021
Note from Overleaf:
SyncTeX will not work correctly with this template (as well as other templates based on similar underlying code, eg CVPR, EMNLP, etc) when the line numbers are active. To make SyncTeX function while authoring your manuscript, either on Overleaf or in your own LaTeX installation, the line numbers have to be turned off by uncommenting \aclfinalcopy.