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vaba tarkvara litsentsid peeter p. mõtsküla <ppm@salakala.eu>
© 2011 Peeter P. Mõtsküla <peeterpaul@motskula.net> Litsents: Creative Commons Attribution-Share Alike 3.0 Unported (http://creativecommons.org/licenses/by-sa/3.0)
< definitsioon >
vaba tarkvara != vabavara
free as in speech (not as in beer)
FSD: vabadus 0. kasutada 1. uurida 2. jagada 3. parendada
OSD/DFSG: 1. levitamise vabadus 2. lähtetekst 3. tuletatud teosed 4. autori lähteteksti terviklus 5. isikute või gruppide diskrimineerimise keeld 6. tegevusalade diskrimineerimise keeld 7. litsents peab levima koos tarkvaraga 8. litsents ei tohi olla tootespetsiifiline 9. litsents ei tohi piirata muud tarkvara 10. litsents peab olema tehnoloogia-neutraalne (OSD)
heal lapsel mitu nime free software open-source software F/OSS, FLOSS...
vaba / avatud lähtekoodiga tarkvara
< copyleft >
 
copyleft vaba kasutamise tagamise klausel
autoriõigus autori õigus lubada teistel oma teost kasutada, täiendada, levitada...
copyleft levitamine on lubatud ainult samadel tingimustel
copyleft ---------- copyright
< vaba tarkvara litsentsid >
BSD—MPL—GPL—AGPL nõrk <= copyleft => tugev
BSD, apache jt: tee, mis tahad, aga ära mind süüdista
MPL, LGPL jt: kasuta, nagu tahad, aga anna täiendused tagasi
GPL jt: oma tarbeks tee, mis tahad, aga jaga sama litsentsiga
AGPL, EUPL jt: avaliku teenuse osutamine on sama hea kui jagamine
litsentside vohamine opensource.org/licenses fsf.org/licensing/licenses
kohaldatavus eestis EUPL: kindlasti muud: ilmselt
NB! sa ei pea vaba tarkvara jagama, kuid sa ei saa selle jagamist keelata
< vaba tarkvara arendusmudeli eripärad >
protsessid kvaliteedi tagamine release management kogukonna juhtimine
tehnilised eeldused modulaarne arhitektuur versioonihaldussüsteem korralik dokumentatsioon kommunikatsioonivahendid
juriidilised riskid autoriõiguse vaidlused patendivaidlused garantii ja tootjavastutus
ärilised erisused ainulitsentside andmine all-litsentside andmine kliendi „sidumine“ litsentsitasude küsimine
< litsentsi valik: omatoode >
litsentsi valik komponendid? eesmärgid?
litsentside ühilduvus A & B = ?
mitmiklitsentsimine A | B
litsentsi vahetamine hambapasta ei lähe tuubi tagasi
< litsentsi valik: tellimustöö >
tarkvara litsents
tarkvara ise tehtud mujalt litsentsitud litsents A litsents B
tarkvara ise tehtud mujalt litsentsitud tegijale tellijale A B C
tarkvara ise tehtud mujalt litsentsitud uus vana tegijale tellijale A B C D
tarkvara spetsiifiline üldotstarbeline ise tehtud mujalt litsentsitud uus vana tegijale tellijale A B C D E
A: spetsiifiline, ise tehtud pooled on lepingu tingimuste valikul vabad ainulitsents võib olla mõistlik valik
B/C: üldotstarbeline, ise tehtud pooled on litsentsitingimuste valikul vabad ainulitsents on tellijale kallis ja tegijale koormav B eristamine A-st võib olla keerukas
D: mujalt tegijale litsentsitud litsentsitingimuste valik piiratud ainulitsents (reeglina) välistatud
E: mujalt tellijale litsentsitud tegija ei ole litsentsilepingu pool tellijal on “võta või jäta” valikuvabadus
litsents teeb vabaks :) [email_address]

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vaba tarkvara litsentsid