MK8SE is available both for Windows and Linux and as a web app.
MK8SE is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License version 3 as published by the Free Software Foundation.
MK8SE is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License version 3 for more details.
You should have received a copy of the GNU Affero General Public License version 3 along with MK8SE. If not, see https://www.gnu.org/licenses/.